What did Obama threaten to do if the red line were crossed?
That's an easy out.
But rational people believe that when one sets a line and refers to it as a game changer.....then it will be a game changer.
So exactly what has Obama done that can be deemed a game changer?
All I seem to recall is him THREATENING and then saying to Russia....(paraphrased).....'you take the ball, I aint got nothing.'
That is not the case. Obama still had options. However from Putin's perspective Obama's options were going to cause trouble for Russia. If Obama did intervene with a military strike it would mean depriving Assad of his air supremacy as a prerequisite to taking out his chemical weapons. That would mean that Assad's regime would collapse pretty soon thereafter. Putin needs Assad to remain in place because of the domino impact it will have if he is overthrown. Russia already has civil unrest in many of the Muslim nations to the south. There is no guarantee that whomever replaces Assad will be a friend of Putin's.
So rather than Obama "having nothing" it was Putin who needed to step in and save Assad's sorry butt. Personally I believe Obama should have made a surgical strike without any warning. But he might have had a 3 am call from Putin asking him to hold off. We won't know for sure but the fact that the negotiation went like clockwork tells me that Putin wanted it more than Obama needed it. What confirms it for me is that Israel is happy with this outcome. They would not be that way if Putin was screwing around on this deal.