Domino theory Domino theory The domino theory was a theory prominent from the 1950s to the 1980s that posited that if one country in a region came under the influence of communism, then the surrounding countries would follow in a domino effect. The domino theory was used by successive United States administrations during the Cold War to justify the need for American intervention around the world. U.S. President Dwight D. Eisenhower described the theory during an April 7, 1954, news conference, when referring to communism in Indochina: In 1945, the Soviet Union brought most of the countries of eastern Europe and Central
American-led intervention in the Syrian Civil War Council's approval - a grave violation of international law - but at that point they at least tried to show some material evidence." American-led intervention in the Syrian Civil War The American-led intervention in the Syrian Civil War refers to the US invasion and partial military occupation of Syria, support of Syrian opposition and the Federation of Northern Syria during the course of the Syrian Civil War, and active involvement of the US military against the Islamic State of Iraq and the Levant and against the al-Nusra Front from 2014. Since 2017, the US and some other coalition nations have