As the prime-minister of the coalition War Cabinet, and the Minister of Defence, Churchill led his nation through the Second World War. Despite of his staunch enmity towards the communism, he made the alliance with the Soviet Union, and played a key role in creating of the anti-fascist coalition. He was also an architect of the Atlantic Charter and presided over the Allies' conferences in Casablanca, Quebec, Cairo, Teheran, Yalta and Potsdam.