Cuban Missile Crisis missiles already on the island. At 3:00 pm EDT on October 22, President Kennedy formally established the Executive Committee (EXCOMM) with National Security Action Memorandum (NSAM) 196. At 5:00 pm, he met with Congressional leaders who contentiously opposed a blockade and demanded a stronger response. In Moscow, Ambassador Foy D. Kohler briefed Khrushchev on the pending blockade and Kennedy's speech to the nation. Ambassadors around the world gave notice to non-Eastern Bloc leaders. Before the speech, US delegations met with Canadian Prime Minister John Diefenbaker, British Prime Minister Harold Macmillan, West German Chancellor Konrad Adenauer, French President Charles de Gaulle
Cuban Missile Crisis was a medium-range ballistic missile, capable of carrying a thermonuclear warhead. It was a single-stage, road-transportable, surface-launched, storable liquid propellant fueled missile that could deliver a megaton-class nuclear weapon. The Soviets were building nine sites—six for R-12 medium-range missiles (NATO designation "SS-4 Sandal") with an effective range of and three for R-14 intermediate-range ballistic missiles (NATO designation "SS-5 Skean") with a maximum range of . On October 7, Cuban President Osvaldo Dorticós Torrado spoke at the UN General Assembly: "If... we are attacked, we will defend ourselves. I repeat, we have sufficient means with which to defend ourselves; we have