how would you decide? >> anderson, it's not terribly complicated. it is typical law enforcement practice, national security practice to focus where there is an increased incidents of radical islamic terrorism. >> in the united states, is there an increased radical islamic terror ump not being addressed? >> look, new york city, mayor de blasio shut down the program designed to prevent it. that is indefensible, it is political correctness run amok. another example, the san bernardino terrorist, the female terrorist posted on social media public call to skree hjihad. the obama administration thought it was politically incorrect. we should not be admitting people calling for jihad and we need a president focused on keeping the country safe. on the visa application she put

a made-up address in pakistan, it doesn't exist, yet the vetting from the administration because they don't acknowledge the threat, they vet her the same as anybody else. that doesn't make sense. >> we have to leave it there. it the top of the hour. thank you for calling in. that's it for me on "the lead." i'm in for jake tapper. i'm turning it over to wolf blitzer in "the situation room." wolf? >> happening now, breaking news, coordinated attacks isis blame the bloody terror bombings in a airport, a u.s. ally and home to nato, dozens are dead, wounded. search for a suspect. police think they've identified two suicide bombers but say this man may have gotten away. huge security sweep turns applauup a nail bomb, chemicals and isis

flag. america on guard. security steps up in cities, airports and rail stations, soft targets are once again the major concern as s.w.a.t. teams and bomb sniffing dogs are deployed. how great is the threat? a need for nato. a day after donald trump questioned america's involvement in the alliance, 2016 rivals are saying today's attack shows how vital nato is. i'm wolf blitzer. you're in "the situation room." >> announcer: this is cnn breaking news. >> breaking news, isis claiming responsibility for the horrific attacks which killed at least 30 people and wounded 230 others in belgium. a u.s. ally and home to nato headquarters. the terror group says it carried out the bombings at brussels international airport and metro

station, and it's warning of worse to come. video taken right after the blast shows carnage and the chaos inside the smoke-filled airport departure hall and inside a major subway tunnel. belgian authorities released surveillance image. the men in black presumed to have been the suicide bombers. and police are now hunting for the other man. massive security sweeps under way across belgium and police say a nail bomb, isis flag were found in a search in one of the homes. attacks came days after belgium police captured salah abdeslam linked to the massacres in paris. u.s. officials say it's likely today's attack is tied to the same terror network. security is stepped up in u.s. cities with anti-terror teams deployed in airports and transit hubs. attacks come on the same day as crucial primary contests in arizona, utah, idaho. and the presidential candidates be they have been quick to weigh in. i'll talk with the gop

presidential front-runner, donald trump, and the house homeland security chairman congressman mike mccaul. our correspondents, analysts and guests will have full coverage of the day's top stories. let begin with our pentagon correspondent, barbara starr. >> good evening. a into minutes ago the pentagon revealed a lieutenant colonel and family were injured in the airport attacks in brussels. tonight, security sweeps across brussels all of europe on edge. >> reporter: terror striking at the heart of europe. devastating explosions at brussels airport, police spending hours searching for this man, seen in light clothes on surveillance with two others dressed in black who are thought to have committed the suicide attacks. the blast happened outside security checkpoints for ticket the passengers and near the airline checking counters.

>> the second explosion was more powerful than the first one, blew out the windows. >> reporter: and then about an hour later, brussels subway attacked near the headquarters of the european union. authorities across europe had been on edge since the belgian raid that captured salah abdeslam us specced of taking part in november 2015 terror attacks in paris. >> translator: we feared a terrorist attack would happen and this is what happened. >> reporter: as belgian security services moved across brussels looking for more suspects a chilling discovery. in a brussels neighborhood, investigators found a nail bomb, em can cal products and isis flag. >> homes searched, people interviewed. >> reporter: isis quick to claim responsibility. one twitter posting saying, what

will be coming is worse. u.s. intelligence believes hundreds of isis operatives may be in europe, some self-radicalized, others returning from syria with orders from isis leader al baghdadi. officials believe he's still able to communicate with underlings in charge of attack the west. attacks in europe at "charlie hebdo," across paris in november, no you in brussels, have a common thread, their lack of sophistication. ak-47s, suicide vests and explosives not difficult to buy, and some isis attackers working so quietly they're not known to intelligence services. most definitely his words, al baghdadi leader of isis is still very much able to be in touch with his deputies and in touch with isis' foreign attack

facilitators. that's the word that the u.s. is using tonight. baghdadi very much in charge. >> they know his headquarters in belgium. any word that u.s. military personnel there, for that matter, diplomats and other u.s. citizens are being told earlier we heard from the state department shelter in place. but what about the military specifically a lot of u.s. military personnel there? >> there are a lot in belgium, wolf. that we need to remind everybody, it's nato headquarters and the military headquarter just outside brussels. tonight the u.s. military is tellingite personnel to stay away from brussels. words we're hearing, stay 15 kilometers away from the u.s. embassy. they don't want military people in the center of the city while this is going on. that travel advisory in effect until further notice. as belgian authorities

sharing what they know about the attacks with american counterparts let bring in pamela brown. >> the key piece of evidence this picture we've been look at today, showing three suspects at airport and brusselsing as you see in the picture, two men are wearing just one glove on their left hand. officials believe that is because they were hiding detonators that they had taped to their hands and didn't want to call attention to themselves. right now the hunt is on for the man in white in this picture. authorities believe he is connected to salah abdeslam, who was arrested this past friday and was behind the paris attacks. officials believe he's part of the bigger network and that this plan, these attacks, have been in the work for some time, wolf, weeks, possibly months but after abdeslam was arrested friday, that's attacks were accelerated. how many others are part of the network attached to the three men. >> they think that these guys

did -- wore working as part of a larger network active in brussels, active throughout belgium, for that matter, under the direct orders? is that what they're saying of isis headquarters in syria. >> the belief is that raqqah, headquarters, was facilitating this. there's a large network of foreign fighters, people gone to syria, trained there, sent back to launch an attack. we're seeing this playing out. in this case, belgium in particular a hotbed for the foreign fighters and people who haven't been to syria providing resources, housing for these terrorists. we saw raids over the weekend, wolf, authorities arresting people. clearly a lot more people that they need to track down. >> thanks very much. pamela brown reportingen joining us chairman of the house homeland security committee, mike mccaul of texas. i know you're well-briefed on what's going on based on the information and it's early in

the investigation. what can you tell us about the two attacks, three attacks that happened in belgium? >> obviously, it's an attack by isis. it looks like the indicators, an external operation. >> what does that mean? >> looks like paris attackers although it was suicide bombing. foreign fighters i guess is what i'm talking about. people that have gone to the region trained and come back. this is obviously interconnected i think to paris attacks. we have the paris attacker just arrested last friday. he's been talking to authorities. ity that may have accelerated attacks in belgium which we have seen which is horrific. >> in other words, deliberately tied this to come after the arrest of salah abdeslam in brussels? >> i think the speculation is perhaps they may have been on to the cells and the cells had to activate sooner rather than later. >> afraid he was talking?

>> of course. remember, the leader, the mastermind in the paris attackers claimed that he he came with 90 other foreign fighters into europe and they're all ticking time bombs waiting to go off. >> we saw the picture of the three guys at airport, two of them they say were the suicide bombers with baggage carts, if you will. one in lighter jacket seems to have gotten away. any indication where he is? if they're getting closer to finding him? >> there's a be on the lookout noti notice. this is a really hoff r lly hor instance. i was in brussels, met with note toe and the minister of security in belgium, in brussels. and the anxiety level's very high, particularly because of the muslim community's segregated from the rest of the

culture there. and they are breathing radical itch. i think it a perfect storm. >> the concern that some u.s. officials have -- i don't know if you do -- is that security, counterterrorism, intelligence in belgium has been weak. >> they are overwhelmed. and i got the sense when i was over there, there's military in the street back then. obviously you can't stop all of this from happening. belgium per capita has more foreign fighters than any other european nation and that's a threat. 40,000 foreign fighters converged into iraq and syria. now we have thousands in europe and per capita majority are in brussels, in belgium, where we have nato and the symbolic capital of the eu. >> headquarters of nato as well. more to discuss. stay with us. we'll take a quick break.

lots of concern what happened in brussels could happen here in the united states. we'll speak with the charmt of the house homeland security committee when we come back. your path to retirement... may not always be clear. but at t. rowe price, we can help guide your retirement savings. for over 75 years, investors have relied on our disciplined approach to find long term value. so wherever your retirement journey takes you, we can help you reach your goals. call a t. rowe price retirement specialist or your advisor ...to see how we can help make the most of your retirement savings. t. rowe price. invest with confidence.

covering breaking news, suicide bombings in a brussels subway station at city's international airport. take a look at exclusive video. it shows chaos in the airport within seconds of two explosions, amid smoke and dust, people running for exits and hear screams of victims the brussels airport remain shut down. our senior international correspondent atika shubert is there. what's the latest over there?

>> reporter: wolf, this is very much an active crime scene. we saw a convoy of military trucks bringing more soldiers in to secure the area. here what happens we know about the investigation and what -- how the explosions happened. 8:00 a.m. the first explosion went off. a few seconds later, the second explosion went off. now, according to eyewitnesses there, there seemed to be a gap, quite a bit, between them. they say one of the member was definitely a suicide bomber, confirmed by the prosecutor. what they're looking to identify is whether in fact there were two suicide bombers at the scene who detonated explosive vest and if there's a third man who may have been helping them or intending to be a suicide bomber as well. they have circulated a photo of the man, in a white sweater jack sweat black hat. they are appealing to the public. anyone who might recognize him, know anything about him, call in

to police immediately. they believe he was involved in the attack. now an hour after what happened at the airport, an hour later, a bomb ripped through the metro station maalbeek and there's where we saw the most casualties in both attacks, at least 30 people have been killed, more than 200 wounded. and it is likely, wolf, that that death toll may rise. injuries were very severe. >> atika thanks very much. back with republican congressman mike mccaul of texas. it wasn't that long ago that lieutenant general stewart, the director of the dia, die finance intelligence agency, he told congress that isis, quote, probably conduct additional attacks in europe and direct attacks on the u.s. homeland this year in 2016. you're the chairman of the homeland security committee want do are you bracing for.

>> i think europe has been wide open it no surprise. i think he's right. europe, given the security gaps, we have legislate out of my committee to address this. isis last week called for terrorists, of paris-style attacks in the united states. that's one of the greatest fears. i've talked to the fbi, homeland security officials we are ramping up security in the united states but also, looking at visa applicants, visa waiver applicants and looking at travel manifests on the airplanes to try to come into the united states. >> we know there are isis-related investigations in the 50 states right now. any specific terror plot that you know of that the u.s. is working on. >> when i talked to the fbi, they said there's no specific, credible threat in the united states. factor in the idea that they can communicate now what's called dark space and encrypted space. as paris style attacks occurred they had encrypted apps we

couldn't see what they were saying, that's why we couldn't stop it from happening. when will i talked to federal law enforcement, that's our greatest concern here in the homeland, they could be here. we know there are terrorist communicating with individuals in the united states. we just can't see what they're saying. >> is the fear they will go after soft targets like they did, for example, today in brussels, subway station, outside the security perimeter at an airport and you walk in before you go through security, baggage department, would you check your bags in? >> they were soft targets. prim's hard to manage but we are putting viper teams they call them. >> what are viper teams? >> tsa, local law enforcement working together to provide a greater presence at airports and at metro stations and train stations to provide deterrence. >> with sniffer dogs. >> canines. the ka nines can detect it.

>> is it visible. >> it visible, done for deterrence. >> what else needs to be done at u.s. airports that's not being done? >> i think, again, we are -- it's a foreign travel coming into the united states. so last points of departure, that is what my legislation's looking at, that's what homeland security's look at to tighten up the travel documents and making sure they can't come into the united states. foreign fighter threat is real. that's what we saw in belgium and we don't want to see in the u.s. >> fear is sleeper cells may be here in the united states? >> paris style attacker, brussels attack, occurring here in the united states through the use of encrypted communications. when you say encrypted communications, best intelligence, they can't break that encrypted communication? >> even with the lawful warrant, we can't see it, even

intelligence services can't see. this went under the radar screen. i wouldn't be surprised in the diagnosis or autopsy of this case that we find out that encryption was used. >> changer thanks for joining us. >> mike mccaul. coming up, update on shocking discoveries made by police in hours after the attacks. at mfs investment management, we believe in the power of active management. we actively manage with expertise and conviction. so you can invest with more certainty. mfs. that's the power of active management.

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belgium. fred plik tin at a site after the suicide bombings what's the latest on the investigation and manhunt? >> reporter: wolf, i'm in the northeastern brussels district of scar beck and there was a big police operation still ongoing. the latest from authorities they say somewhere in this district they've discovered chemicals, nails and say they've discovered what appears to be isis flag. to put into perspective, this district that we're standing in right now was also the site of a bomb making afactory used for paris attacks last november. we saw a chopper in the air with door open and the a sniper hanging out taking aim at some building or something else and a search light on as well. even right now, seeing police vehicles go in and out of the area. we just saw a decontamination vehicle go out of the area as well which explains the fact

they were dealing with chemicals. they haven't told us whether or not they arrested anyone at the raids that took place here, and clearly this operation is still going on. >> looks like major clampdown on the entire city. you've been there many times. is that true, the city of brussels and suburbs shut down? >> reporter: yeah, pretty much. it pretty much shut down. almost the entire public transport system shut down. if you look at this area right here, you can see, there's that police cordon. that's not just to keep vehicles out, that's to keep residents out as well. many told to leave their houses. there were special buses put in place from the public transport company to bus people out of the neighborhood. there's a lot of people standing outside here who for six, seven hours have not been able to get back to their houses. this city is one on lockdown. there is a little bit of traffic but not much. they are taking the security situation very, very seriously

here in brussels really being careful to make sure they don't miss anything. >> good luck. be careful yourself. after today's terror attacks donald trump has renewed his call for a temporary ban on entry of muslims, syrian refugees into the united states. i'll speak live with republican presidential front-runner after this. out on the town or in for the night, at&t helps keep everyone connected. right now at at&t, buy the new samsung galaxy s7 and get one free.

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today's terror bombings in belgium are a grim backdrop as

voters in utah and arizona and idaho casting ballots or caucusing. joining us, donald trump. thanks very much for joining us. i want to talk about the terror attacks in brussels today. if you were president of the united states, what steps would you take right now to prevent these kinds of attacks from happening here in the united states? >> well, i'd immediately strengthen our borders, as i've been talking about for a long period of time, and i would be very, very strong on visas and very, very probably end a lot of them and strong especially coming from certain parts of the world which as you know i've spoken about and i've been criticized in some circles for and praised in other circles for. but this is a problem, radical islamic terrorisms a major problem and we have a president that won't mention the words and he's making a terrible mistakes up this is radical islamic terrorism. >> would you continue to support a temporary ban on all muslims

coming into the united states? >> well, you you have no choice. you are going to make certain exceptions a exceptions and exceptions on heads of state. we have a real problem and people don't have any idea what's going on. we have a government that doesn't get it. we have a real problem, wolf. and we have a government that doesn't understand what's happening. >> you're from new york city, where there are three major airports the most traffic, train station in the country. should there be added layers? security is always high in new york, especially after 9/11. but should there be added levels of security put in place right now? for example, at airport baggage claim centers, train stations, other places? >> yes, there should. you know we have a mayor who is doing a terrible job and everybody talks about. he's doing a terrible job in so many ways, de blasio.

he's a disasters a may somewhere probably challenged. he knocked out surveillance and so many other things. we had the finest surveillance of the radical islam situation, they say in the world, the new york city police department which is an amazing department. he knocked it out. he took it down. he knocked it out. that was a terrible mistake. >> what -- if you do have the temporary ban, though, on muslims coming into the united states, don't you understand, at least a lot of the law enforcement authorities say, you need the cooperation of muslims to find the radical muslim, jihadists and without their cooperation it could get a whole lot worse. >>'man caught the other day, this low-life, caught the other day, he was guarded by people that knew the community knew he was there, everybody knew he was there. he was seen shopping in grocery stores and they have pictures of him shopping in grocery stores. his community knew he was there. probably many people that knew

him, never turned him in, and that's part of the problem. maybe they're going by 15 rea law, what they want to start off with. we have a real problem. unless we solve the problem we can't continue to be the stupid people. look at what's going on in germany, even sweden where they're having problems like they never thought possible. sweden never had problems where a group came in and now all of a sudden they have a section. we can be nice about it and politically correct about it, but we're being fools, okay, being absolute fools. there's something going on. unless we get to the bottom of it, we're going to have to be very vigilant, very strong. look at what's going on in brussels. brussels was one of the most beautiful places, everybody talked about it, nobody talks about brussels anymore. on a lot of the news reports, i gs a few months ago i talked about how bad brussels and six,

seven months i talked about how bad brussels was and i got heat over it, now they're saying trump was right. brussels is a disaster. they have areas of brussels police won't go into the areas they're so dangerous and radicalized. i'm saying, you have -- we have to be smart and we have to be vigilant. >> if you were president, mr. trump, what -- how would you question salah abdeslam, one of the ring leaders of the paris attacks, who was arrested the other day in brussels. >> that's the man i'm talking about, arrested in an area that everybody knew he was there but didn't turn him in. the muslim community did not turn him in. and they should have turned him in. and right now we have a lot of people, a lot of people think he may have led the attack, he may have been the one that did the attack, or done in ret dugs. what i would do, i would -- look we have to change our law on you know on the waterboarding thing, where they can chop off heads

and drawn people in cages and heavy steel cages and we can't water board. we have to change our laws and we have to be able to fight at least on almost equal basis. we have laws that we have to obey in terms of torture. they have no laws whatsoever they have to obey. >> would you start torturing him right away or see if he would cooperate and share information? belgian police say he has been talking. >> he may be talking but he'll talk faster with the torture. if he would have talked you might not have all of the people dead and horribly wounded because he probably knew about it. i would be willing to bet he knew about the bombing that took place today. we have to be smart. hard to believe we can't water board which is -- look, nothing's nice about it but it's minimal form of torture. we can't water board and they can chop off heads.

>> people who passed the law say waterboarding is torture. you would go further? >> shroutly. >> how far. >> i'd go further. by the way -- >> military people oppose torture, it's not part of the u.s. military code of conduct. >> i don't blelieve they do. i think they believe in in 100%. talk to general patton from years ago, general douglas macarthur, i guarantee, you would be laughing. right now they're crying and spinning in their graves as they watch the stupidity gowin on. >> it was the cia engaged in the waterboarding after 9/11, u.s. military deliberately said they didn't want to have any part of the waterboarding because it wasn't part of the military code of conduct that's why it was left to civilians workin at cia with the authorization of the

justice department and the bush administration. >> with with the authorization, there's probably a political decision, not a real decision. it wasn't probably, in my opinion, a military decision, it was a political decision and continues to be a political decision. the problem that we have wolf, it's a very big problem. fighting by different sets of rules. they're fighting with no rules, no anything. they can blow people up in shopping centers, have bombs that are so vicious with the nails and the glass and all of the things come spewing out, blinding, destroying people, killing people and yet we have rules and regulations we can't water board. we have get smart. >> it a violation of international law to engage in torture and the u.s. signed on to the various treaties banning torture. >> i would say the eggheads that came up with the international law should turn on their television and watch cnn right now because i'm look at scenes on cnn right now as i'm speak to

you that are absolutely atrocious. and i would be willing to bet, seeing all of the bodies laying all over the floor, including young, beautiful children laying dead on the floor, i would say if they watch that, maybe they'll approve waterboarding and other things. >> ted cruz suggested today the u.s. should step uppite involvement going into muslim neighborhoods, as he described it, looking for potential terrorists. is that something you would support. >> yes, it a good idea. >> muslim neighborhoods in the u.s. >> yeah, i would support that. >> how would you do that? how do you find out where muslim neighborhoods are? >> you do it. you do it. i bet you the local police know more than what's going on today than anybody would understand. i would be willing to bet the local police -- i know it's true with gangs. i know if the dangs, if the police were given their hand they would stop the gang problems in chicago and various other places.

the gang members, they know everything. they know things going on and local police know plenty about the muslims, too. police have been so hurt and so left out and so discouraged by what's happening where they lose their jobs, they lose their pensions, lose everything, we have a soft country. we have a -- in many ways, in many ways, not in certain current tris but many countries we have a very soft world and it's going to get a lot tougher, you watch. people can't take these. these horrible, violent acts, the man that was caught, who i'm sure knew about this, and i'm sure if they were strong and strong like i mean strong, i'm sure he would have given them up before this act happened. he knew about the act. this act was an act of retribution because they caught him, a lot of people are saying that, probably was. maybe he planned it. but you know, he's probably right now sitting there with lawyers surrounding him saying

you don't have to talk, don't worry about it, the trial will start in ten years, in ten years everybody will forget. >> what do you say to the millions of muslim americans who are very patriotic, loyal americans, many have sons and daughters who serve in the u.s. military who feel they would be discriminated against if policies went forward? >> i say we have a problem. we have radical islamic terrorism problem. we have a problem like we've never had before. this is a problem that has gone on. general percenting had the problem with radical islamic terrorism. and he handled it a certain way. i think you probably know that story. it's a gruesome story. the problem didn't exist for 48 years after that happened. we have to be tougher than we are. right now they look at us as weak, soft, stupid people. look at scene on cnn right now, where all of the bodies all over

the floor and we're worried about waterboarding. >> mr. touch, i know you've got to go. we'll continue the everythiconvs down the road. >> thank you. >> we'll get reaction to what we heard. cnn counterterrorism analyst phil mudd, paul cruickshank, mike rogers, former democratic congresswoman jane harman with us as well, served on intelligence armed services and she's now president and ceo of the wilson center. stand by. i want a quick break. we'll be right back. in background) tv with heart failure, danger is always on the rise. symptoms worsen because your heart isn't pumping well. (water filling room) about 50 percent of people die (dog whimpering) within 5 years of getting diagnosed.

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get some reaction to what we just heard from the republican presidential front-runner, donald trump. phil mudd, you served in the cia. you know something about what the cia did after 9/11 engaging in waterboarding, other alleged torture. what's your reaction to what you heard from mr. trump? >> wolf, i don't do politics, i do reality. i don't care if it's president trump, president clinton, president sanders, president cruz, two points, number one, torture is unconstitutional, and it violates federal law. you cannot be the president of the united states and ask a federal agency to commit an act of torture. number two and final -- >> let me interrupt for a moment, phil. the justice department during the bush administration authorized the cia to engage in waterboardin waterboarding. is that torture? >> they said in 2002 it was not, i can tell you from talking to my friends and from being in the chair, if you went back in 2017,

if the president asked the question, the department of justice will say, waterboarding is torture. people in my business will not do it, wolf. >> go ahead, what's the second point you were going to make? >> my second point is it's unconstitutional but the final point was the department of justice, if you decide you think it is constitutional, they have to pass judgment. the department of justice in 2016, or under a new president, 2017, is not where they were 15 years ago. they'll say you can't do it. >> mike rogers, you heard mr. trump say he would go a step further than waterboarding and engage in even more torture to get information from these terrorists. >> yeah, i think what, in it were to be president trump, would realize there are enhanced interrogation techniques that only the president can authorize up to, excluding waterboarding. and that has been maintained in the law, so there are options for a president if they want to go further. i think it's -- if someone's cooperating, i'm an fbi-trained

interrogator, the last thing you want to do is intercede with anything that will disrupt that trust, confidence and rapport building you can get with someone who will cooperate. he was looking at the scenes, reacted emotionally, like a lot of americans are reacting emotionally to these scenes saying, yeah, maybe he's right. the law is very clear on this that at a certain point, you can no longer use enhanced interrogation techniques, again, up to and, but excluding waterboarding. >> jane harman, what was your reaction to what we heard from mr. trump? >> well, i remember the history, and i don't believe that the waterboarding we did worked but more important, there was a memo in the justice department, took congress years to get it, drafted by john yu, said anything other than death or imminent organ failure did not constitute torture. congress was appalled to learn about that memo, so were others in the justice department and we

passed a law basically codifying the army field manual which does not permit waterboarding, and i believe that building trust, as senator john mccain who was subject to these procedures believes building trust is a much more effective way to get the truth from a detainee than causing that person to say anything just to get you to stop treating him in some fashion. >> you spent a lot of time, paul, in brussels, you're from there, you were born there. is mr. trump correct when he says there are certain neighborhoods in belgium where -- >> no, the police can go anywhere in bus brussels, it's a western capital, the capital of europe. it's certainly true, there are neighborhoods where there is a lot of extremism, there are neighborhoods where there's some sort of problems with drugs and there are neighborhoods where you have both those problems in the same areas which can make them quite uncomfortable

sometimes to spend time -- >> and police would be afraid to go to those neighborhoods? >> police wouldn't be afraid, but cnn crews, we've done reporting if places like molenbeek before and had to call the police because we've been encircled by people who don't like -- >> like jihadists you mean? >> people with extremist views, people who don't want a western television station like cnn to be filming in a neighborhood. so there are certain areas of brussels, it's a city i was born in, i know well, which can feel uncomfortable, but there are no no-go areas for police. >> guys, everybody, stand by. coming up, we have massive security sweeps under way right now after the deadly bombings in brussels. one search turned up a nail bomb and isis flag. how many terrorists remain at large? abdominal pain. diarrhea. xifaxan can help. prescription xifaxan is a 2-week treatment

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happening now, breaking news. transit terror attacks. terrorists strike at the heart of a major european capital with coordinating bombings targeting an airport and a subway station. dozens of people are dead, hundreds are injured and are more attacks imminent? terrorists escape. a manhunt for a suspect seen in white next to two suspected suicide bombers. raid uncover a nail bomb, chemical products and an isis flag. did isis leaders order these attacks? missed signals? the deadly new attacks coming days after the arrest of a key suspect in the paris massacre, raising concern about other terrorists investigators may have overlooked. was this a revenge attack? were there mis