Now news is out that Russia has a 100 page report showing that it was the rebels who did the gasing, not Assad. Putin has said, it makes little logical sense for Assad to attack his own people when the momentum has been in his favor and knowing that the world would come down hard, especially the US.
Russia says it's compiled 100-page report blaming Syrian rebels for a chemical weapons attack | McClatchy
So who is more credible? Obama or Putin?