If anyone is to blame for Russia and China's vetoing of the Syria resolution in the UN Security Council, it's Barack Obama. Last year the United States and the Arab League brought forward a No Fly Zone to the UN Security Council. Instead of enforcing a No Fly Zone, Obama, Cameron and Sarkozy instead used it as an excuse for an invasion and regime change. If Russia and China refused to take another plan from the same suspects at face value, the blame lies with an administration that abused a No Fly Zone.
The message from Russia and China is fairly clear. Fool me once, shame on you. But don't even think about trying it twice.