A friend of mine IM’d me after Powell’s speech to say she was disappointed that Powell didn’t present more hard evidence. I explained that he surely presented the absolute bare minimum that he thought he had to, simply to protect our sources. But I was just guessing. It seems that that’s true. “We burned some very important sources to try to make this case,” said Ken Pollack just now on CNN, speaking of the evidence Powell presented at the Security Council. He wasn’t criticizing Powell, but simply saying that making this case cost us dearly. For example, the Iraqis now know how we track their chemical weapons activity. They’ll devise some other way now to keep it hidden.