...and, tomorrow, nothing will be different. There will still be strife, there will still be IEDs, there will still be civil war.
If anything, only one thing will be different; the end of the theory that if only the tyrants were dead, the people would be free. Unfortunately, things aren't that simple; it's not a juvenile conflict between tyrants and the "freedom fighters", but something more than that.
Not that it'll affect Bush's war much, as that theory is at its core. With any luck, though, future presidents and future pundits will actually learn the lesson. Here's hoping.