The Obama administration is attempting an overly ambitiously and subtle policy of simultaneously helping the good rebels with clandestine lethal armsand $114 million in aid even as it prepares forpossible drone strikes on the bad rebels. Nice idea, but manipulating the rebel forces via remote control has little chance of success. Inevitably, aid will end up with the Islamists and air strikes will kill allies. Better to accept one's limitations and aspire to the feasible: propping up the side in retreat.
At the same time, Westerners must be true to their morals and help bring an end to the warfare against civilians, the millions of innocents gratuitously suffering the horrors of civil war. Western governments should find mechanisms to compel the hostile parties to abide by the rules of war, specifically those that isolate combatants from non-combatants. This could entail pressuring the rebels' suppliers (Turkey, Saudi Arabia, Qatar) and the Syrian government's supporters (Russia, China) to condition aid on their abiding by the rules of war; it could even involve Western use of force against violators on either side. That would fulfill the responsibility to protect.
On the happy day when Assad & Tehran fight the rebels & Ankara to mutual exhaustion, Western support then can go to non-Baathist and non-Islamist elements in Syria, helping them offer a moderate alternative to today's wretched choices and lead to a better future.