No foreign policy decision in recent history has had greater repercussions than President George W. Bush's decision to invade and occupy Iraq. It launched a new doctrine of preemptive war, mired the American military in an intractable armed conflict, disrupted world petroleum supplies, cost the United States hundreds of billions of dollars, and damaged or ended the lives of hundreds of thousands of Americans and Iraqis. Its impact on international politics and America's standing in the world remains incalculable.
