The United States
The American agenda on Syria completes the circle. Sure, the president is outraged by Assad's brutality, and yes he'd like to do more. But bad options and electoral politics provide little incentive or leeway for heroics on Syria. The president is more focused on the perpetuation of the House of Obama than on the fall of the House of Assad. And rightly so. Americans are tired of costly military interventions, and the election is going to turn not on foreign policy but on the economy. And the Republicans can't find a way to make political hay from an Obama foreign policy that on balance has been smart and competent.
The only issues Americans care about abroad these days are terrorism and high gas prices. The president may pay for the latter but has been very tough on the former. Foreign policy will not help him in November, but a costly stumble abroad could hurt him. And the Syrian crisis offers plenty of opportunities for that. If the president acts, it will be cautiously and in the company of others.
Next month, there will be another Friends of Syria meeting. And most likely, there will be a lot of talk and some ratcheting up of the pressure on Assad, but little else. The only thing that could alter this passivity is a spike in the killing and violence that goes qualitatively beyond the horrors we've seen so far. A successful intervention would require a grand concert of powers all focused not just on ending the killing but on creating and nurturing a post-Assad Syria. Right now, the external players are too divided, too self-interested, and too committed to their own narrow concerns for that. Syria may be fixable, but certainly not on the cheap. And nobody's yet willing to pay the price.