Sarah Palin knows what's wrong with President Obama's approach to Ukraine. In a Facebook post, she said that she had predicted that after Russia invaded Georgia in 2008, Obama's "moral indecision" would prompt Vladimir Putin to tackle Ukraine next: "Yes, I could see this one from Alaska. I’m usually not one to Told-Ya-So, but I did." The Washington Post editorial page also knows what's wrong. "Mr. Obama," it says, "has been vague about the consequences of continued Russian aggression." An aggression that is taking place, we are told, in "the center of Europe." It suggests that the most forceful measure...