Monroe Doctrine

The Monroe Doctrine was a United States foreign policy position that opposed European colonialism in the Western Hemisphere. It held that any intervention in the political affairs of the Americas by foreign powers was a potentially hostile act against the United States.[1] The doctrine was central to American foreign policy for much of the 19th and early 20th centuries.[2]

President James Monroe first articulated the doctrine on December 2, 1823, during his seventh annual State of the Union Address to Congress (though it would not be named after him until 1850).[3] At the time, nearly all Spanish colonies in the Americas had either achieved or were close to independence. Monroe asserted that the New World and the Old World were to remain distinctly separate spheres of influence,[4] and thus further efforts by European powers to control or influence sovereign states in the region would be viewed as a threat to U.S. security.[2][5] In turn, the United States would recognize and not interfere with existing European colonies nor meddle in the internal affairs of European countries.

By the end of the 19th century, Monroe's declaration was seen as a defining moment in the foreign policy of the United States and one of its longest-standing tenets. The intent and effect of the doctrine persisted for over a century, with only small variations, and would be invoked by many American statesmen and several American presidents, including Ulysses S. Grant, Theodore Roosevelt, John F. Kennedy, and Ronald Reagan.

After 1898, the Monroe Doctrine was reinterpreted by Latin American lawyers and intellectuals as promoting multilateralism and non-intervention. In 1933, under President Franklin D. Roosevelt, the United States affirmed this new interpretation, namely through co-founding the Organization of American States.[6] Into the 21st century, the doctrine continues to be variably denounced, reinstated, or reinterpreted.

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