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
Non-intervention in the Spanish Civil War whom were now Spaniards, at the last meeting of the League of Nations, thereby showing his contempt for the Non-Intervention Committee. Similarly, Italians would leave Spain under the Anglo-Italian agreement, not through the Committee. Britain and France recognised the Nationalist government on 27 February 1939. Clement Attlee criticised the way it had been agreed, calling it 'a gross betrayal... two and a half years of hypocritical pretence of non-intervention'. Non-intervention in the Spanish Civil War During the Spanish Civil War, several countries followed a principle of non-intervention, to avoid any potential escalation and possible expansion of the war to other