This concerns the status of Czechoslovak domestic organizations at the time of the Cuban Missile Crisis. Included in the report are the Revolutionary Trade Union Movement, Central Council of Labor Unions, Czechoslovak Union of Youth, and the National Front.

The cable states Cuba has alerted its armed forces to maximum combat readiness. Cuba's government had already taken the precautions of arresting known counterrevolutionaries in all aspects of society, with all important factors monitored. General aura of the country is one of tenseness, but the people continue about their lives as normal. There is a sense of strong revolutionary unity in the wake of this blockade, especially after a speech given by Castro. Cable concludes with a message that the first Soviet ship arrived on the basis of not carrying any military hardware.

This cable sent to Prague confirms the decision by President John F. Kennedy to blockade Cuba, based on talks between Cuban Foreign Minister Raul Roa and Soviet Ambassador to Cuba Aleksandr Alekseev. Despite no orders for the American warships to stop Soviet ships, Alekseev was preparing in anticipation for "dangerous provocations." Cuba canceled all PanAm flights, while at the same time allowing Czech and Soviet flights to proceed.