This whole summer was full of threequels, why should politics be any different? For the last two days I've been completely immersed in these hearings on Iraq. Part One: Gen. Petraeus and Ambassador Crocker make their case to the House Armed Services, and Foreign Affairs Committees. Part Two: The Senate Armed Services Committee. And Part Three: The Senate Foreign Relations Committee. The plot was a little predictable, and at times, dull. There was the occasional surprise, but so much of the big news leaked in advance that the only mystery is whether this week's testimony will actually change anything. The progress report on Iraq has been front page news all week. Did anything you hear or read change your mind?