Today, the White House and all of Washington are embracing Ukraine's interim Prime Minister Arseniy Yatsenyuk — chosen by revolutionaries who overturned an elected government. But Vladimir Putin insists Ukraine's new leaders are not legitimate and he's encouraging the Crimean region to break away with a vote this coming Sunday. Arguments about self-determination and national sovereignty are being used by each side in its own interest. Can Putin be isolated by the US and Europe? Is it too late for him to turn back? With the looming deadline of Sunday's vote, is some compromise possible?