No, “it’s not 2003.” It’s a generation later, and the problem of the worst weapons in the hands of the worst state actors persists. Iraq under Saddam Hussein was one. It is no longer. Donald Trump has made it clear he is determined to make sure the Islamic Republic follows the Baath regime into the dustbin of history. It’s likely that one person in America who is rooting him on, based on his own complex and rueful experience, is George W. Bush.