After the Second World War the relationship between super powers, the United States of America and the Soviet Union, became openly hostile with the threat of nuclear war hanging over the world. This hostility lasted for decades and became known as the Cold War. The situation before World War II was not so tense between the tow countries although tension had been rising between them from the 1890's. The power in the USSR had passed from Lenin to Stalin who proposed an independent nation and emphasized the need for social security. It was he who created the buffer zone after World War II using communist countries in an attempt to increase the safety of Russia. This buffer zone was one of the reasons for the dramatic increase in hostility between the two nations as the USA saw this as the spreading of the communist interest and an aggressive...