It does no dishonor to those who served to learn from the mistake that was made in starting an unnecessary war in Iraq. And, to realize that it is a mistake the U.S. continues to make. Andrew Bacevich, a Boston University professor who is also a West Point graduate, Vietnam combat veteran and retired Army colonel; and whose son was an Army officer killed in Iraq put it best. "The final tragedy of a tragic enterprise is that the U.S. has learned next to nothing," he says. "The belief that war works remains strangely intact."