section_path: History/Background: World Wars and aftermath
section_name: Background: World Wars and aftermath
paragraph_text: Background: World Wars and aftermath
  
  Internationalism and visions of European unity had existed since well before the 19th century, but gained particularly as a reaction to World War I and its aftermath. In this light the first advances for the idea of European integration were made. In 1920 John Maynard Keynes proposed a European customs union for the struggling post-war European economies, and in 1923 the oldest organisation for European integration, the Paneuropean Union was founded, led by Richard von Coudenhove-Kalergi, who later would found in June 1947 the European Parliamentary Union (EPU). Aristide Briand — who was Prime Minister of France, a follower of the Paneuropean Union, and Nobel Peace Prize laureate for the Locarno Treaties — delivered a widely recognized speech at the League of Nations in Geneva on 5 September 1929 for a federal Europe to secure Europe and settle the historic Franco-German enmity.
  
  With large-scale war being waged in Europe once again in the 1930s and becoming World War II, the question of what to fight against and what for, had to be agreed on. A first agreement was the Declaration of St James's Palace of 1941, when Europe's resistance gathered in London. This was expanded on by the 1941 Atlantic Charter, establishing the Allies and their common goals, inciting a new wave of global international institutions like the United Nations (founded 1945) or the Bretton Woods System (1944).
  
  In 1943 at the Moscow Conference and Tehran Conference, plans to establish joint institutions for a post-war world and Europe increasingly became a part of the agenda. This led to a decision at the Yalta Conference in 1944 to form a European Advisory Commission, later replaced by the Council of Foreign Ministers and the Allied Control Council, following the German surrender and the Potsdam Agreement in 1945.
  
  By the end of the war, European integration became seen as an antidote to the extreme nationalism that had caused the war. On 19 September 1946, in a much recognized speech, Winston Churchill, speaking at the University of Zürich, reiterated his calls since 1930 for a "European Union" and "Council of Europe", coincidentally parallel to the Hertenstein Congress of the Union of European Federalists, one of the then founded and later constituting members of the European Movement. One month later, the French Union was installed by the new Fourth French Republic to direct the decolonization of its colonies so that they would become parts of a European community.
  
  By 1947 a growing rift between the western Allied Powers and the Soviet Union became evident as a result of the rigged 1947 Polish legislative election, which constituted an open breach of the Yalta Agreement. March of that year saw two important developments. First was the signing of the Treaty of Dunkirk between France and the United Kingdom. The treaty assured mutual assistance in the event of future military aggression against either nation. Though it officially named Germany as a threat, in reality the actual concern was for the Soviet Union. A few days later came the announcement of the Truman Doctrine which pledged American support for democracies to counter the Soviets.