In the first stage, the Soviet Union and the United States had their own offensives and defenses. As the United States is stronger than the Soviet Union, generally speaking, the United States is offensive and the Soviet Union is defensive. From the middle and late 1950s to the early 1960s, the comprehensive national strength of the Soviet Union still lagged behind that of the United States, especially its military strength.

In the second stage, the Soviet Union was offensive and the United States was defensive. The Soviet Union narrowed the gap with the United States, especially in military strength.

In the third stage, the United States was on the offensive, the Soviet Union was on the defensive, the United States regained its superiority, and the Soviet Union contracted in an all-round way.

The historical background of the cold war between the United States and the Soviet Union;

After World War II, great changes have taken place in the world situation. Capitalist countries, headed by the United States, have become superpowers, while socialist countries, headed by the Soviet Union, are the only countries that can compete with the United States.

According to the basic principles established by Yalta and other conferences, the world powers re-divided the world map and sphere of influence, and the Yalta system was formed. 1945 Spring, the United Nations was founded.

With the end of World War II, the national interests and ideological conflicts between the United States and the Soviet Union intensified, and the wartime alliance began to disintegrate. From 65438 to 0947, the United States launched a "cold war" against the socialist countries headed by the Soviet Union on the grounds that Greece and Turkey were threatened.