NATO or the North Atlantic Treaty Organization was established in 1949 to organize political and military support between the United States and a group of European nations in order to deter and, if necessary, defeat the Soviet Union.
After the fall of the Berlin wall in 1989 and the collapse of the Soviet Union, NATO gradually morphed into an instrument through which the capitalist class of North America and Europe seeks to impose its political will on the rest of the world, mostly via military operations.