In a memorandum to the Central Committee of the Bulgarian Communist Party Politburo, Gero Grozev, Deputy Minister of Foreign Affairs, critiques the Cuban Communist Party and its approach to building socialism. Grozev describes Cuba’s increasingly poor relations with European communist parties, interference in Latin American affairs, and misunderstanding of Marxist-Leninist principles. Grozev continues describing Cuban leaders as committed functionaries unaware of their mistakes. To correct Cuba’s mistakes socialist countries should increase contact with the Cuban government and help it develop economically and mature politically.

Georgi Atanasov, Secretary of the Central Committee of the Dimitrov Communist Youth Union, reviews the selection process for the 9th World Youth Festival host location. Cuba and Bulgaria both are candidates. Atanasov explains Cuba’s campaign and Bulgaria’s concern that strong support for its candidacy will sour its relations with Cuba. Atanasov contemplates problems with Cuba’s candidacy and ways to prevent a diplomatic disagreement.

Petar Marinkov, Third secretar at the Bulgarian Embassy to Cuba, informs the Bulgarian ambassador about meetings with Cuban officials on youth communist leagues. Marinkov’s reviews negotiations centered on Cuba’s non-participation in established youth leagues and festivals. Cuban youth leaders hope to host youth festivals and incorporate military training for armed liberation movements into youth festival activities.

In a coded telegram to the Central Committee of the German Unified Socialist Party, Dimo Dichev, Head of the International Relations and Foreign Policy Department of the BCP Central Committee, reports on Bulgaria’s military assistance to Cuba and national liberation movements in Latin America, Asia, and Africa.

The Central Committee of the Bulgarian Communist Party approves the Cuban government’s request to train Cubans in counterintelligence, but not sabotage.

In a memo, Dimo Dichev, Head of the International Relations and Foreign Policy Department of the Bulgarian Communist Party Central Committee, reports unsatisfactory relations between Cuba and Bulgaria. Dichev suggests political and journalism exchanges to show an initiative to bolster relations. Dichev proposes exchanges between specific Cuban and Bulgarian newspapers and magazines.

In a memo, Dimo Dichev, Head of the International Relations and Foreign Policy Department of the BCP Central Committee, reports unsatisfactory relations between Cuba and Bulgaria. Dichev suggests political, agricultural, pedagogical and journalism exchanges to show an initiative to bolster relations.

First Secretary of the Bulgarian Embassy to Cuba A. Hubenov describes a Latin American communist party conference held in Havana, November 1964. The parties secretly discussed their struggle against imperialism and the expansion of communist revolutions in Latin America and Cuba's assistance to that struggle. Conference deliberations included a discussion of the Sino-Soviet split and the fear of factions within the communist movement.

The Politburo of the Central Committee of the Bulgarian Communist Party resolves to expand Bulgaria's relationship with Cuba. The Politburo proposes an official visit and Bulgarian exhibition.

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.