President Kennedy phones former Presidents Hoover, Truman and Eisenhower to brief them on the situation. Meetings to coordinate all actions continue. Kennedy formally establishes the Executive Committee of the National Security Council and instructs it to meet daily during the crisis. Kennedy briefs the cabinet and congressional leaders on the situation. Kennedy also informs British Prime Minister Harold Macmillan of the situation by telephone.
President Kennedy writes to Nikita Khrushchev, Premier of the Soviet Union, prior to addressing the American public on live television: ... I have not assumed that you or any other sane man would In this nuclear age, deliberately plunge the world into war which it is crystal clear no country could win and which could only result in catastrophic consequences to the whole world, including the aggressor.
At 7:00 p.m. Kennedy speaks on television, revealing the evidence of Soviet missiles in Cuba and calling for their removal. He also announces the establishment of a naval quarantine around the island until the Soviet Union agrees to dismantle the missile sites and to make certain that no additional missiles are shipped to Cuba. Approximately one hour before the speech, Secretary of State Dean Rusk formally notifies Soviet Ambassador Anatoly Dobrynin of the contents of the President's speech.