President Obama had no choice. The US has in place the military assets to prevent genocide among Yazidis and Christians in flight without food or shelter and pursued by columns of Islamic State militia. Such is the chaos in the region which the neo-con Bush administration intended to be a beacon of democracy, America finds itself supporting a grouping which includes Russia, Iran and Syria all of whom are engaged directly or indirectly in fighting the same extremist adversary. There is a very real risk that, unless a coordinated alliance with a clear vision and a firm plan is established, the shaky government structures struggling against an anti-government ideology, will implode. If that happens the whole region will explode.
Think about that over the weekend.