The Berlin Airlift

In 1948 The Cold War was already in it's beginning stages. The Russians had blockaded the Western sector of Berlin. Because of this movement, I created a massive airlift to give supplies to the Berliners. The Russians soon backed down. All the while I was negotiating a military alliance to protect western nations. Established in 1949, this became the North Atlantic Treaty Organization.

http://www.whitehouse.gov/about/presidents/HarrySTruman