List of Allied World War II conferences

This is a list of World War II conferences of the Allies of World War II. Conference names in boldface indicate the conferences at which the leaders of the United States, the United Kingdom, and the Soviet Union were all present. For the historical context see Diplomatic history of World War II.

Location Dates Major participants: Major results
U.S.-British Staff Conference
Washington, D.C. January 29 – March 27, 1941 American, British, and Canadian military staff Set the basic planning agreement for the U.S. to enter the war
Atlantic Conference
Argentia, Newfoundland August 9 – 12, 1941 Churchill, Roosevelt, Hopkins Atlantic Charter, proposal for a Soviet aid conference
First Moscow Conference Moscow, USSR September 29 – October 1, 1941 Stalin, Harriman, Beaverbrook, Molotov Allied aid to the Soviet Union
First Washington Conference
Washington, D.C. December 22, 1941 – January 14, 1942 Churchill, Roosevelt Europe first, Declaration by United Nations
Second Washington Conference
Washington, D.C. June 20 – 25, 1942 Churchill, Roosevelt Make first priority opening a second front in North Africa, postpone cross-English Channel invasion
Second Moscow Conference Moscow, USSR August 12 – 17, 1942 Churchill, Stalin, Harriman Discuss reasons for North African campaign instead of cross-Channel invasion, Anglo-Soviet pact on information and technological exchanges
Cherchell Conference Cherchell, Algeria October 21 – 22, 1942 American General Clark, and Vichy French officers including Charles Mast A clandestine conference before the Operation Torch landings, in which some Vichy French commanders agreed not to resist the Allied landings in Morocco and Algeria[1]
Casablanca Conference
Casablanca, Morocco January 14 – 24, 1943 Churchill, Roosevelt, Charles de Gaulle, Henri Giraud Plan Italian Campaign, plan cross-Channel invasion in 1944, demand "unconditional surrender" by Axis, encourage unity of French authorities in London and Algiers
Yenice Conference
Yenice, Tarsus, Turkey January 30 – 31, 1943 Churchill, İsmet İnönü Turkey's participation in the war.
Third Washington Conference
Washington, D.C. May 12 – 25, 1943 Churchill, Roosevelt, Marshall Plan Italian Campaign, increase air attacks on Germany, increase war in Pacific
Quebec Conference
Quebec, Canada August 17 – 24, 1943 Churchill, Roosevelt, King D-Day set for 1944, reorganization of South East Asia Command, secret Quebec Agreement to limit sharing nuclear energy info
Third Moscow Conference Moscow, USSR October 18 – November 1, 1943 Foreign ministers Hull, Eden, Molotov, and Fu, and Stalin Moscow Declaration
Cairo Conference
Cairo, Egypt November 23 – 26, 1943 Churchill, Roosevelt, Chiang Kai-shek Cairo Declaration for postwar Asia
Tehran Conference
Tehran, Iran November 28 – December 1, 1943 Churchill, Roosevelt, Stalin First meeting of the Big 3, plan the final strategy for the war against Nazi Germany and its allies, set date for Operation Overlord
Second Cairo Conference
Cairo, Egypt December 4 – 6, 1943 Churchill, Roosevelt, İnönü Agreement to complete Allied air bases in Turkey, postpone Operation Anakim against Japan in Burma
British Commonwealth Prime Ministers' Conference London, England May 1–16, 1944 Churchill, John Curtin (Australia), Peter Fraser (New Zealand), King (Canada), and General Jan Smuts (South Africa). British Commonwealth leaders support Moscow Declaration and reach agreement regarding their respective roles in the overall Allied war effort
Bretton Woods conference Bretton Woods, USA July 1 – 15, 1944 Representatives of 44 nations Establishes International Monetary Fund and International Bank for Reconstruction and Development
Dumbarton Oaks Conference Washington, D.C. August 21 – 29, 1944 Sir Alexander Cadogan, Andrei Gromyko, Edward Reilly Stettinius, Jr., and Ku Wei-chün Agreement to establish the United Nations
Second Quebec Conference
Quebec, Canada September 12 – 16, 1944 Churchill, Roosevelt Morgenthau Plan for postwar Germany, other war plans, Hyde Park Agreement
Fourth Moscow Conference
Moscow, USSR October 9 – 18, 1944 Churchill, Stalin, Molotov, Eden Establishing post-war spheres of influence in Eastern Europe and Balkan peninsula
Malta Conference
Malta January 30 – February 2, 1945 Churchill, Roosevelt Preparation for Yalta
Yalta Conference
Yalta, USSR February 4 – 11, 1945 Churchill, Roosevelt, Stalin Final plans for defeat of Germany, postwar Europe plans, set date for United Nations Conference, conditions for the Soviet Union's entry in war against Japan
United Nations Conference on International Organization San Francisco, USA April 25 – June 26, 1945 Representatives of 50 nations United Nations Charter
Potsdam Conference
Potsdam, Germany July 17 – August 2, 1945 Stalin, Truman, Attlee , Churchill (in part, until defeat of the Conservative Party) Potsdam Declaration demanding unconditional surrender of Japan, Potsdam Agreement on policy for Germany

In total Churchill attended 16.5 meetings, Roosevelt 12, Stalin 7.

For some of the major wartime conference meetings involving Roosevelt and later Truman, the code names were words which included a numeric prefix corresponding to the ordinal number of the conference in the series of such conferences. The third conference was TRIDENT, the fourth conference was QUADRANT, the sixth conference was SEXTANT, and the eighth conference was OCTAGON. The last wartime conference was code-named TERMINAL.

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