more recently, benotman has denounced terror altogether. and last weekend, on the anniversary of the september 11th attacks, he published an open letter to bin laden, calling for the world's best-known terrorist to recognize that his strategy had failed and to call it quits. what was the meeting with bin laden like? and what caused benotman's change of heart? you're about to find out in a "gps" exclusive. i was in london this week and spoke to noman benotman in our studios there. >> just this week you have put out an open letter to osama bin laden in which you ask him and ayman al zawahiri, his number two person, to renounce terror altogether. what made you write this letter now? because you have been working against terrorism for some time. why did you feel it was worth sending a personal message to your former associate, bin laden? >> i think from my assessment it's really the right time because i believe now we are -- if you take it from a muslim perspective and muslim countries and societies, we are in a state of crisis. and enough is e