I'll just make a comment. In terms of financial arrangements, one aspect of this that was pursued early in the Syrian conflict but was not followed up on in any kind of real way concerned sanctions on the Assad regime. Those were taken in tandem with increased sanctions on the Islamic Republic of Iran. While those two sanctions regimes took care of the problem of where Syria in particular sold its oil, they actually did not take care of the fact that Iran and Syria trade extensively in oil products and other products as well and support each other.
I think we'd have to think a little bit about how we would interrupt that assistance going forward, at what time, and how useful it would be. Obviously we're having conversations with the Iranians over what to do in Syria, but the question is, are the conversations going in the right direction?
Until recently—or until now—I don't think the Iranians would like to go with anyone else but Assad. It doesn't mean that they're married to him, but they don't see the necessity of getting rid of him in the midst of this crisis and in the midst of the threat from ISIL, but how could this be incentivized along the way?
If negotiations with Iran fail, then we would to look at stronger measures to isolate both the Assad regime as well as the Islamic Republic, but that is in the distant future and the subject of a long homework assignment for us all, I'm afraid.