Who is the Syrian Opposition?

It's a question posed from time to time, but never fully answered. Take, for instance, the story at The New York Times about VP Biden's meeting with "the leader of the Syrian opposition council, Sheik Ahmad Moaz al-Khatib." I think it's excellent that the US is engaging with the opposition council, but call me jaded.

I remember Ahmed Chalabi and the opposition group he ran from outside of Iraq. He was a man who said everything would be great if the US invaded Iraq and he and his group fed us much of the intel that was used to justify the invasion.

Now every situation, indeed, every person is different. But I get nervous any time I hear US officials are meeting with an opposition council, especially in Munich, far from the fighting. I think it serves us well to be skeptical of the influence and control any such personage, or council can exercise. This is especially true when the Secretary of State is saying Syrian rebels are receiving messages from the tribal regions of Pakistan.