The Bush Doctrine refers to multiple interrelated foreign policy principles of the 43rd President of the United States, George W. Bush. These principles include unilateralism, preemptive war, and regime change.
Charles Krauthammer first used the phrase in June 2001 to describe the Bush administration's "unilaterally withdrawing from the ABM treaty and rejecting the Kyoto protocol." After the 9/11 attack, the phrase described the policy that the United States had the right to secure itself against countries that harbor or give aid to terrorist groups, which was used to justify the 2001 invasion of Afghanistan. The Bush Doctrine became strongly associated with the Bush administration's decision to invade Iraq in 2003.
Different pundits have attributed different meanings to the Bush Doctrine. It was used to describe specific policy elements, including a strategy of "preemptive strikes" as a defense against an immediate or perceived future threat to the security of the United States. This policy principle was applied particularly in the Middle East to counter international terrorist organizations and to justify the invasion of Iraq.
Generally, the Bush Doctrine was used to indicate a willingness to unilaterally pursue U.S. economic interests. Some of these policies were codified in a National Security Council text entitled the National Security Strategy of the United States published on September 20, 2002.
The phrase "Bush Doctrine" was rarely used by members of the Bush administration. The expression was used at least once, though, by Vice President Dick Cheney, in a June 2003 speech in which he said, "If there is anyone in the world today who doubts the seriousness of the Bush Doctrine, I would urge that person to consider the fate of the Taliban in Afghanistan, and of Saddam Hussein's regime in Iraq."
The main elements of the Bush Doctrine were delineated in a document, the National Security Strategy of the United States, published on September 17, 2002. This document is often cited as the definitive statement of the doctrine.