Bulgarian Embassy in Athens staff member Atanasov reports on Greek media accounts of military preparations to the Bulgarian Ministry of Foreign Affairs. According to Atanasov, Greek newspapers report preparations include Soviet movements in the Mediterranean in response to US submarines carrying Polaris missiles, Bulgarian maneuvers near the Greek and Turkish borders, and an anticipated NATO forward strategy in Greece. Atanasov adds that NATO is preparing the defense of possible attacks on Greece.

Drozniak forwards a report from US Assistant Secretary of State for Inter-American Affairs [Edwin M.] Martin. Martin says that the Americans are well-informed of the military situation in Cuba, that Cuba does not possess nuclear weapons (nor will they be likely to because the USSR did not give such weapons to China, so why would they give them to Cuba?), that the level of the Cuban economy is twenty-five percent lower than the period before Fidel Castro came to power and Cuba is much more economically dependent on the USSR, and finally that any military invasion or complete blockade of Cuba would be considered an act of war by the USSR.

Protocol 62 illustrates how it was Khrushchev who raised the stakes during the missile crisis and dictated a new letter to Kennedy indicating he would only remove the missiles from Cuba in exchange of the United States withdrawing its military bases from Turkey and Pakistan. The Pakistan demand would later be dropped, however and the US would only agree to remove its IRBMs from Turkey.

Soviet Foreign Minister Andrei Gromyko cables the Soviet Embassy in Havana that the Soviet leadership had decided to allow UNSG U Thant and his representatives to visit Soviet launchers sites in Cuba and verify that the launchers are being dismantled.