This is a list of U.S. Presidential doctrines. During the 20th century, many U.S. Presidents created their own doctrines, which outlined a key goal, attitude or stance for U.S. foreign affairs.
* Monroe Doctrine: The Americas should be free from future European colonization and free from European interference in sovereign countries' affairs.
o [Theodore] Roosevelt Corollary to the Monroe Doctrine: That the U.S. has the right to intervene in the affairs of Latin American and particularly Caribbean countries whose indebtedness or institutional disarray might otherwise lead to intervention by European powers.
* Truman Doctrine: If one nation falls to a communist takeover, it will logically follow that its surrounding nations are also at risk for a communist takeover (the domino theory).
* Eisenhower Doctrine: Non-communist governments must receive aid and support from the US, because otherwise they are in danger of falling under Soviet influences.
* Kennedy Doctrine: The United States will oppose the formation of any Latin-American communist government.
* Johnson Doctrine: U.S. will intervene in the Western Hemisphere to prevent a communist threat to any government.
* Nixon Doctrine: When direct US military presence is not possible, the US shall train and assist native rebels in the country of the conflict.
* Carter Doctrine: An attempt by any outside forces to gain control of the Persian Gulf region will be regarded as an assault on the vital interests of the United States of America, and such an assault will be repelled by any means necessary, including military force.
* Reagan Doctrine: Anti-communist rebels must be supported because they oppose tyranny.
* Clinton Doctrine: The best way to maintain stability in large areas that hold US interests is to combat instability in small areas, before the conflicts can intensify and spread.
* Bush Doctrine: U.S. will make no distinction between terrorists and those who harbor them.
