It's usually best in the American context to keep one's criticisms of Israel polite and measured, but there are times when it's better to be blunt in the hopes of achieving clarity. Israel's current war in Lebanon is strategically blinkered and morally obtuse. The idea that the United States or American Jews like me should support it out of friendship is akin to the notion that a real friend would lend a car to a drunk buddy after the bartender confiscates his keys. I understand why the Israeli government and public think this war is a good idea, but they're simply mistaken.
Note that Yglesias' article is already a few days old; subsequent events have only added support to his arguments.