What role did stalin and the end of world war II play in instigating the cold war?

Stalin instituted the Berlin Blockade (24 June 1948 - 12 May 1949), one of the first major crises of the Cold War, preventing food, materials and supplies from arriving in West Berlin. The United States, Britain, France, Canada, Australia, New Zealand and several other countries began the massive "Berlin airlift", supplying West Berlin with food and other provisions.