On Sept. 11, 1990, President George Bush addressed a joint session of Congress to explain why the U.S. and its allies had sent their armies to the Arabian peninsula. Iraq's invasion of Kuwait in August of that year was an act of aggression, but the president also made clear that it was the first test for the new world order emerging from the long decades of the Cold War. "New world order" -- those words still resonate as Russia invades Ukraine and China threatens to absorb Taiwan. What do they actually mean? Are we still living in the post-war order that American leaders invoke? In this episode, historian Jeffrey Engel talks about why Bush's vision for an order built on peace and cooperation never came to be.