In his book Cold War: America's Crusade Against World Communism, James Warren discusses the conflict between the United States and the Soviet Union, its causes, its consequences, and its future. Warren also analyzes why the United States was so afraid of communism and how this fear controlled both domestic and foreign policies of the United States. In George Washington's farewell address, he warned future leaders to avoid foreign entanglements. However, the United States moved away from this policy in 1941 after the bombing of Pearl Harbor. From that point on, the United States realized that with great power came great responsibility. The United States felt a responsibility to develop a strategy to combat the spread of global communism, seen as the “red menace.” The United States believed that communism would spread from the Soviet Union to all of Europe; the United States understood that the spread of communism would not be very difficult because the destruction caused by World War II left many nations vulnerable to communism. Furthermore, the Soviet Union had a highly trained army, a ruthless leader, and a nation devoted to Marxism-Leninism, which held that human progress meant the destruction of Western democracy and capitalism. The Cold War was a military, diplomatic, economic, and scientific struggle between the Soviet Union and the United States. The rivalry between these two nations also affected places such as Korea, Ethiopia, Nicaragua, Malaysia, and Vietnam. The Cold War controlled many of the crises that occurred in the last half of the 20th century. The main conflict of course was the threat of nuclear weapons. Thomas Larson wrote that “vulnerability to weapons that could destroy entire countries… heightened fears and antagonisms and forced the reader to put concepts such as war spending into perspective. Warren convinces the reader of his thesis that the Cold War was not just a nuclear arms race, but a military, diplomatic, economic, and scientific struggle between the Soviet Union and the United States that had effects on the home front and international affairs . He does so by addressing the Truman Doctrine and the Marshall Plan, the Berlin Airlift, the loss of China, the Korean War, the Cold War on the home front, Eisenhower's presidency, Kennedy and the New Frontier and his reaction to Cuba , the Vietnam War. , presidential action from Nixon to Carter, and how all of these things intensified the Cold War. Warren not only convinces the reader of this topic, but through it also communicates the importance of learning from this event so that future generations can prevent it from happening again..