Just to point out that by claiming that April Glaspie somehow led Saddam Hussein to believe that the U.S. was sanctioning him to invade Kuwait would also put Iraq directly responsible for the attacks on the U.S. on September 11, 2001. I don't see where Glaspie condoned Iraq's invasion of Kuwait at all. Glaspie was playing the diplomatic game that ambassadors have to play and Hussein, a man who all rational people considered unstable at best, just conjured up what he wanted to believe, pretty much the way some on this thread are doing over the 9-11 attacks.
We tend to believe what we want to believe. Those who believe that the U.S. was directly and intentionally responsible for the attacks of 9-11 are those who want to believe that the U.S. is the bad guy in world events.