THE moment he pulled the trigger, there was near-universal agreement that President Obama had done the inevitable thing, the right thing and, best of all, the bold thing. But before we get carried away with relief and elation, let’s not forget what we saw in the tense 36 hours that fell between late Monday night, when word spread of Rolling Stone’s blockbuster article, and high noon Wednesday, when Obama MacArthured his general. That frenzied interlude revealed much about the state of Washington, the Afghanistan war and the Obama presidency — little of it cheering and none of it resolved by...