Who was Behind the Attack on the USS Cole?
BRIAN NELSON, CNN ANCHOR: U.S. investigators are continuing to try to find out more about the attack on the USS Cole and who might be behind that attack. And CNN terrorism analyst Peter Bergen join us from Washington with his insight and perspective -- Peter.</s>PETER BERGEN, CNN TERRORISM ANALYST: Hi, Brian.</s>NELSON: I guess the question -- the question I want to ask you now is, there have been two claims of responsibility, I think -- at least two -- what do you know about them?</s>BERGEN: Brian, yes, two or three claims of responsibility. Counter-terrorism officials say it is routine to get claims of responsibility after an event like this. A lot of them are bogus. Anybody with access to a pay phone can make these claims. But one of the claims is certainly something that should be taken a bit more seriously. It is from the Islamic Army of Aden, which is a group that has kidnapped Western tourists in Yemen in 1960 -- in 1997 -- a group that has some links with Osama bin Laden. So that -- that particular claim of responsibility is something that is taken more seriously. However, whoever may or may not be behind this attack, there may be a possibility we will never get a legitimate claim of responsibility.</s>NELSON: Investigators are in Aden right now just pouring into all of these details. How do they begin the process?</s>BERGEN: Well, Brian, they're interviewing people in the port that might have some information on how that boat managed to get up by the U.S. cruiser. Forensic experts are in there. It's obviously going to be an investigation that could go on for some considerable time.</s>NELSON: And it involves all branches of the U.S. administration, U.S. government, doesn't it?</s>BERGEN: Indeed. The FBI has sent out over 100 experts to the scene. It is an investigation similar to the investigation of the U.S. Embassy in Africa, a very comprehensive investigation that may stretch for years.</s>NELSON: All right, well, you'll be following it for us. Thank you, Peter -- CNN's Peter Bergen joining us from Washington.