1954 in the Vietnam War 5 April The National Security Council met again to consider U.S. intervention at Điện Biên Phủ. The Army, including Army Chief of Staff General Matthew Ridgway, was negative, stating that U.S. intervention would require 7 army divisions and heavy air support. 7 April President Eisenhower used the phrase "falling dominoes" in a press conference. This was the origin of the domino theory which postulated that if Vietnam became communist the other nearby states would soon follow. The domino theory was a prominent justification for the Vietnam War in the United States during the 1960s. 14 April Secretary of State John
American-led intervention in the Syrian Civil War 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 also targeted military positions of the Syrian government. The United States first supplied the rebels of the Free Syrian Army with non-lethal aid