In 1962, Soviet missiles were only powerful enough to be launched to Europe but the United States missiles could strike the whole Soviet Union. Later in April 1962, Soviet Premier Nikita Khrushchev thought of the idea of placing average-range missiles in Cuba. A deployment in Cuba would double the Soviet strategic arsenal and provide a real defense to a potential U.S. attack against the Soviet Union. While this was all going on Fidel Castro was studying a way to defend his island against a United States attack.
The United States war started on October 15, 1962 when investigated photos were revealed of missiles being constructed in Cuba. A couple days after President Kennedy was informed of the problem. Right away Kennedy organized twelve of his advisors to handle the crisis. Then on October 22, 1962 Kennedy announced the discovery of the missiles to the public, and told them he was going to block off the island. He also said any missile fired from Cuba would be an attack on the United States by the Soviet Union.
Then on October 23 Nikita Khrushchev starting sending letters to Kennedy and there was many letters sent. The letter described the nature of the missiles in Cuba and the peaceful intentions of the Soviet Union.