The Bulgarian Embassy in Havana reports to the Central Committee of the Bulgarian Communist Party and the Bulgarian Ministry of Foreign Affairs on political, economic, and cultural developments in Cuba circa 1963. Cuba is politically united, but is experiencing economic hardship after the “Caribbean Crisis” primarily because of the US embargo. In the report, embassy staff reviews developments between socialist countries and Cuba throughout 1963. Some examples include communist aid to Cuba after Hurricane Flora and Cuba’s stance on Sino-Soviet relations. Bulgaria’s show of solidarity resulted in concrete political, economic, and cultural cooperation. Embassy staff notes the drawbacks and benefits of Bulgaria’s relationship with Cuba.

UN Representative Milko Tarabanov reported to the Bulgarian Communist Party Politburo recent developments of the Conference of the Eighteen-Nation Committee on Disarmament. The report summarizes the conference's work from November 1962-December 1962, the period following the Cuban Missile Crisis. Tarabanov reports that Western powers put forward two draft agreements calling for the cessation of nuclear tests in the atmosphere, under water and in outer space, and underground--the proposals were debated during the 17th United Nations session.

The Cubam Missile Crisis occurred during the conference's session. Main issues discussed after Cuban Missile Crisis included: suspension of nuclear tests, Soviet Foreign Minister Andrei Gromyko's proposal at the 17th session of the UN, ways to measure nuclear weapons testing, and military alliances (NATO).

Tarabanov also addresses the inter workings of conference members--Western, socialist, and neutral--including disagreements among Western powers. In summary Tarabanov adds that the prospect for cessation of nuclear tests is poor, but notes that the US may consider closing military bases, though not under pressure of the Soviet Union or neutral countries.

A brief analysis of Chinese-Cuban relations during the crisis and Fidel Castro's diplomatic skills in his relations with both the United States and Soviet Union.

Pinto discusses the current situation in Cuba and feels certain that Cuba depends more and more on Soviet economic help, but that Fidel Castro feels sure of that there will only be an overthrow due to an American invasion or by a prolonged total blockade, that will have more grave international implications.

The telegram bears on the circumstances surrounding Fidel Castro's controversial 27 October letter to Khrushchev. Alekseev describes Castro's demeanor as being irritated and paranoid at the time of writing the letter. He provides background on Castro's actions and attitudes at the peak of the crisis, and especially his nocturnal visit to the Soviet embassy and preparation of his letter to Khrushchev on the night of 26-27 October. He advises Moscow on how to handle the Cuban leader, and offers analysis into the emotions and overall mood of Castro and his associates at that moment in the crisis.

The reporter notes that the Korean press, Kim Il Sung, and the Korean Labor Party didn't talk much about Soviet aid for Cuba, and that North Korea supports China in the Chinese-Indian boundary dispute.