I believe, that there is at least de facto cooperation between United States and Iran, at least in Iraq.

A change of strategy suggests there is a strategy. I don't see a strategy that deals with - that concerns with dealing wit with ISIL overall. There is some sort of strategy for dealing with it in Iraq. I'm not sure there is one in Syria. And Libya is another problem altogether.

I think Republicans so mistrust Barack Obama, that if Barack Obama says Putin is terrible, they will be some Republicans who just take the other side.

Well, I think the U.S. has been careful not to go too far in attacking Iran's allies, in particular in attacking Hezbollah forces in Syria, which have been propping up the regime of Bashar al-Assad.

Luck is the residue of good planning.

Retrospective analysis is not a useful guide to current problems.

It's very hard to understand just what our strategy is in Syria, frankly, and on Iraq that this is Iraq's war, that the role of the United States is to help Iraq, to arm, train, support, provide air support, but this has to be Iraq's war.