the cold war 3

please read the document at the attached file below and answer the following questions in your own words. Each question should be answered in at least three sentences. THE ATTACHED FILE IS ONLY RESOURCE TO USE TO ANSWER, NO OUTSIDE SOURCE Please.

1. What kept any one nation from becoming too powerful before World War 2? Why did that balance of power change after the war?

2. How does this document depict the Soviet Union?

3. What does this document claim the goal of the Soviet Union was? How were they going to achieve that goal?

4. How does NCS-68 propose the U.S. can prevent the Soviet Union from achieving its goals?