Reports of a chemical weapons attack that has, at the latest tally, killed 16 Syrian soldiers and dozen or so civilians. Both the regime and the rebels are denying that they were responsible and claiming it was the other. The US State department says there is little evidence that the rebels did the attack, while the Russians say they did. Frankly, I have no idea who is responsible as I could see both the regime and the more zealous rebel factions using chemical weapons.
This puts the US in a tough bind as the government claimed that chemical weapons represented a red line in which we would presumably intervene afterwards, however, this was just rhetoric from the president. Whether or not the US actually intervenes is another story, while the US would certainly like to see Syria be moved away from Iran, the fact is that the current situation is perfectly acceptable to America in the geopolitical sense. What we will probably see is more open, rather than covert, support. But I still doubt we will see US military involvement, though I have little hard evidence to support such a statement, it is just a gut feeling.
As for who is actually responsible? Well, it either could be a false flag operation by the rebels or Assad is gambling that the US, specifically Obama, was just rattling its saber. The war has been going on for two years now, and without western intervention, will probably continue for another two the way things are going. My vote is that the US does nothing, as much as I don't like Assad's regime I also don't trust the rebels. They are not a cohesive entity and we don't need another Libya in the Mediterranean