Iraq invaded Iran. Iraqi leader Saddam Hussein decided to attack Iran for a number of reasons. Saddam feared the effect fundamentalism would have on the Shi'ite majority of his country. Furthermore, Iraq and Iran had had longstanding border disputes. Saddam also believed that the anarchy gripping Iran--especially within the armed forces--made this an especially propitious moment to attack. The war lasted until 1988, and it is estimated that over 450, 000 people died on both sides.