In this essay I will discuss various policies and wars that played an important role in the history of the United States' struggle against the spread of communism throughout the 1940s and 1950s. These things were policies and ideas that helped shape our country's foreign policy and address events that forever changed our country. In 1947, the United States asked a man named George Kennan to do an assessment of the Soviet Union in order to better understand the Soviet threat the United States faced. Kennan, known as the father of lockdown, sent an 8,000-word missive to the U.S. State Department in what is now known as the “Long Telegram.” In this dispatch he stated that he believed the Soviets considered themselves in a state of constant war with capitalism. He believed that the Soviets would use Marxists in the capitalist world as allies. Kennan also said that the aggression of the Soviets would not align with the Russians and their views or with the reality of the economy, but more so with the ideology of the Tsars. Kennan finally pointed out that the Soviet government had a structure that made it impossible to have an accurate picture of reality, both internal and external. These ideologies of Kennan and the policy of containment formed the basis of the four pillars of foreign policy. The first pillar is containment. The lockdown was put in place to stop the spread of communism. Of all the pillars, containment was the most costly. It is this pillar that gave rise to institutions such as NATO (North Atlantic Treaty Organization), CENTO (East Central Treaty Organization) and SEATO (North Atlantic Treaty Organization). Southeast Asia). The second pillar is that of deterrence. The idea of ​​deterrence...... middle of document ......ed from July 1954 to November 1954. The Cuban Missile Crisis took place from October 14, 1962 to October 28, 1962. The crisis lasted 14 day dispute in Cuba. It was the Soviet Union against the United States. This is the crisis that is normally thought of as the moment when the Cold War almost turned into a nuclear conflict. It is also the first case documented as having mutual assured destruction, or MAD, as a deciding factor in an international arms deal. The crisis ended when the Soviets and the United States reached an agreement that Cuba would not be invaded without direct provocation. The missiles were removed by the Soviets as well as some placed by the United States. They also established a nuclear hotline that would allow the United States and the Soviet Union to have direct contact between their leaders..