In a secret supplement to information from the VIII Congress of the People's Socialist Party, Bulgarian delegates Abramov and Tellalov summarize answers that Blas Roca, the Cuban delegation head, provided the congress. Roca claimed that socialism is the end goal of the revolution, but it is not publicly discussed. He explained the Communist party's involvement in the revolution and July 26th Movement. Abramov and Tellalov also describe the reestablishment of relations and disagreements between Cuba and Yugoslavia, including discussions about weapons. Fidel Castro met with socialist country representatives and described Cuba's plans to nationalize enterprises, particularly American. During the congress Castro described the evolution of the July 26th Movement and the consolidation of Communism in Cuba. Abramov and Tellalov endorse Castro's leadership and review the Cuban military's strengths and weaknesses. There is a brief mention Sino-Soviet relations.

The document includes excerpts from a Bulgarian delegation's report on their visit to Latin America in 1960. The excerpt covers the delegation's visit to Cuba.

Avramova and Agnelov report Cuba's desire to establish diplomatic and cultural relations with Bulgaria. Cuba's interest paramountly involve trade. Avramova and Angelov summarize meetings with important government officials, particulalry Ernesto Guevara, head of the National Bank, and Raul Castro, Minister of Armed Forces. Topics include: the development of the revolution against the Batista government, post-Batista power struggles, geographical fatalism and US influence, Cuba's challenges (e.g. illiteracy, the lack of specialists), land and agricultural reform, construction, industrialization. The delegation recommends the establishment of official relations with Cuba and an invitation for Raul Castro to visit Bulgaria.

In Resolution NO. 136, the Central Committee of the Bulgarian Communist Party establishes diplomatic relations with Cuba; sets the goal of establishing and expanding political, economic, and cultural relations with Cuba; and proposes an invitation for Raul Castro to visit Bulgaria. The resolution includes a report drafted by Minister of Foreign Trade Georgi Kumbiliev, on behalf of Todor Zhivkov, to Prime Minister Anton Jugov. Kumbiliev reviews Cuba's interest in a trade agreement with Bulgaria and provides background information about Cuba's trade agreements with other socialist countries, specifically Cuba's export of sugar and import of petrol and agricultural machines.

Resolution of the Bulgarian Communist Party to establish diplomatic relations with Cuba. A report is presented which describes current Cuban economic and trade relations with the Soviet Union, as well as Poland and Czechoslovakia.

In December 1962 Minister of Foreign Trade Ivan Budinov reported to Bulgarian Prime Minister Todor Zhivkov that Bulgaria's 1963 export plan will include the sale of munitions on credit to Cuba. Budinov notes that both the Soviet Union and Czechoslovakia are extending similar credits to the Cuban military. Budinov's report includes the amount of expected sales, proposed credit to extended, and a list of prospective munitions for sale. Budinov asks the Council of Ministers' to approve of the proposal.

The Bulgarian Foreign Ministry sends respects to the Cuban Embassy in Sofia and states that "competent Bulgarian authorities have included the Republic of Cuba as a socialist country in the plan for 1963."

Warning about the content of Castro’s declaration with regard to US threats against Cuba. Reference to the media and other authorities copies of the declaration.

Zhivkov lays out his perspective on the place of Bulgaria within the Communist Camp. He also talks about the Balkans and the rift between Bulgaria and Romania. Both leaders discuss the Chinese accusations of Soviet Revisionism. Raul Castro talks about the strength of the communist movements in Latin America and the prospects for successful social revolutions in Venezuela, Chile, Costa Rica, Uruguay, and Brazil.

The ambassador gives an assessment of the Cuban domestic and foreign policy. He characterizes Fidel Castro as an adventurer and points to certain communist party decisions that are incompatible with the Marxist-Leninist doctrine.

Conversation for the record between Zhivkov and Castro during a four-day-long state visit of the Cuban leader to Bulgaria. Among the main issues discussed was the state of economic development in both countries, their relations with Albania, China, Romania and Yugoslavia; the Cuban foreign policy in Africa and the Caribbean; the civil war in Angola; the battle for the Third World.