JFK was the 35th president of the United States, serving from 1961 until his assassination in 1963. He was the first Roman Catholic and youngest person elected president at 43 years. Kennedy served at the height of the Cold War, and the majority of his foreign policy concerned relations with the Soviet Union and Cuba. He signed the first nuclear weapons treaty in 1963, signed the Peace Corps and the Apollo program. On November 22, 1963, Kennedy was assassinated in Dallas, Texas.