Do you really believe the Iraq war hinged on Bush wanting revenge? Really? Every major intelligence agency in the world believed Hussein had WMD's. Every major Democrat was on record that he did have them. He was in violation of, if I remember right, 17 U.N. resolutions. If there was a reason other than all that it was that Hussein was threatening to take Euros instead of Dollars for his oil. As for whether Reagan would or wouldn't have invaded it's a moot point. Iraq released them when Reagan became president, which strongly suggests that they respected him, feared him, much more than they did Carter.