Though U.S. aid helped Lebanon and Jordan avoid revolution, the Eisenhower doctrine enhanced Nasser's prestige as the preeminent Arab nationalist. Partly as a result of the bungled U.S. intervention in Syria, Nasser established the short-lived United Arab Republic, a political union between Egypt and Syria. The U.S. also lost a sympathetic Middle Eastern government due to the 1958 Iraqi coup d'état, which saw King Faisal I replaced by General Abd al-Karim Qasim as the leader of Iraq.