Cold War chronology
1945 : 'A'-Bomb dropped on Hiroshima + Nagasaki. ...
1947 : Marshall Aid to the west of Europe. ...
1948 : start of the Berlin Blockade – ended in 1949.
1949 : NATO established; USSR exploded her first 'A'-bomb; China becomes communist.
1950 : Korean War started.
1952 : USA exploded her first hyrogen bomb.
