damascus, our frederic pleitgen. right now the u.n. is in syria, investigating a separate chemical attack that happened earlier in year. i'll go to fred first. fred, mccain says it would be easy to intervene without even putting u.s. boots on the ground in syria. you're there, do you agree? logistically, what are the problems, what are the dangers? >> well, it certainly would be dependent on what sort of thing would have to happen for that intervention to actually come through. what does the u.s. actually want to achieve with intervention here in syria? do they want to even out the battlefield or take out the assad regime. certainly, if you don't put boots on the ground, simply a no-fly zone or something like that probably wouldn't even even out the battlefield. one of the things we have to keep in mind is that this is a very well-organized army that bashar al assad have. they have tanks, they have armored personnel carriers, they have a lot of people and hezbollah fighting on their side on a lot of battlefields as well. it really is difficult to see how a no-fly zone would make