First, attack Syria (?):
It is time to change Putin’s calculations, and Syria is the place to do it…. Equally important, shots fired by the US in Syria will echo loudly in Russia. The great irony is that Putin is now seeking to do in Ukraine exactly what Assad has done so successfully: portray a legitimate political opposition as a gang of thugs and terrorists, while relying on provocations and lies to turn non-violent protest into violent attacks that then justify an armed response.
Second, send covert U.S. troops into Ukraine:
Putin may believe, as Western powers have repeatedly told their own citizens, that NATO forces will never risk the possibility of nuclear war by deploying in Ukraine. Perhaps not. But the Russian forces destabilizing eastern Ukraine wear no insignia. Mystery soldiers can fight on both sides.
Why would this work?
Putin … measures himself and his fellow leaders in terms of crude machismo.
Then maybe a hot-pepper eating contest between Putin and Obama would do the trick?
That’s all I can think of to say. Or you could read Robert Golan-Vilella.