President John Frizgerald Kennedy started his involvement in the cold war as a candidate for congress. His campaign addressed the issues involving the coldwar and took a anti-Cold War platform along with many of the other Democrats of the era. Along with this, he also "tough on communism". In 1952, while running for senator he boasted on his work that lead to the conviction of a communist union official.

Even in his campaign for the presendency, Kennedy held a "tough on the Soviets" issue which criticized Eisenhower for "falling behind the Soviets". He promised more money toward the national defense while charging Eisenhower for allowing non-existent "missile gaps" to develop between US and Soviet nuclear arsenals.

In order to make up for this missile gap, Kennedy ordered and increase on the production of nuclear arms. This then set off a nuclear arms race which then lead to the US losing it role as the top nuclear power by the end of the decade. Kennedy did, on the other hand, sign the Limited Test Ban Treaty which started the disarment of nuclear weapons, but it has been said that he signed it only for enviromental means, not for any longterm goals of eliminating nuclear weapons.

JFK tried to reduce tensions with the USSR following the Cuban Missile Crisis. But in the resuction of tention, he had no intention of pulling out of the containment set by the Truman Doctrine. It was also for these reasons that Kennedy held the line in Vietnam, increasing the number of troops from 500 to 16,000. Confronted with the suggestion of pulling out he responded "I think that would be a mistake"

Kennedy also was determined in not seeing Vietnam lost. It was he who decided that South Vietnamese President Ngo Dinh Diem needed to be removed from office because Kennedy felt he was an obstacle in winning the war. Kennedy authorized the coup that overthrew Diem by assassination on November 1, 1963. Kennedy was involved with Vietnam all the way even until the eve of his own death.

For more information on Kennedy:
Kennedy and the Cold War