Russia and China are both of supportative of him as ever and Russia has not decided to stop sending weapons. Iran still supports nd arms him. Hezbollah still support him. If anything he has gained support from the Palestinians who previously were against it bu they feel military action is designed to help Israel so they have sided with Assad. So where is the game changer here ? Even if Obama decides to do something it's just to give him a short sharp shock not depose him so even if he is attacked he will continue fighting his civil war and clinging onto power. With or without American military action this war is far from over and many more will die before it does end.
UN to hold off on separate Afghan bombing probe for now (Reuters)
from the article: A game-changer for Assad, even if there is no U.S. strike