Is Russia abandoning Assad? http://www.nytimes.com/2012/06/20/world/europe/putin-says-syrians-must-decide-assads-fate.html?_r=2
Are the rebels taking hostages? http://www.rt.com/news/homs-army-leave-civilians-311/
Ron Paul will introduce legislation forbidding US involvement. If Iran becomes Syria's best ally, and Russia either backs off or settles for a seat at the table to influence the transition, this could drag on until the Iran issue comes front and center. At that point, the Obama administration meme could become "Syria to unstable to allow Iranian opportunism" or "Syria is a friend of our enemy, Iran".