National Security Archive For the Havana conference, which took place during the 40th anniversary of the Cuban Missile Crisis, Cuban president Fidel Castro and former US secretary of defense Robert McNamara discussed newly declassified documents showing that US president John F. Kennedy, in meetings with Soviet leader Nikita Khrushchev's son-in-law Adzhubei in January 1962, compared the US failure at the Bay of Pigs to the Soviet invasion of Hungary in 1956. The Budapest conference of 1996, carried out by the Archive's "Openness in Russia and East Europe Project" in collaboration with Cold War International History Project and Russian and Eastern European partners, focused
Cuban Missile Crisis U-2 by a Soviet missile violated direct orders from Moscow, and Cuban antiaircraft fire against other US reconnaissance aircraft also violated direct orders from Khrushchev to Castro. Second, the Soviets already had 162 nuclear warheads on Cuba that the US did not then believe were there. Third, the Soviets and Cubans on the island would almost certainly have responded to an invasion by using those nuclear weapons, even though Castro believed that every human in Cuba would likely die as a result. Khrushchev also knew but may not have considered the fact that he had submarines armed with nuclear weapons