The Bulgarian Communist Party Politburo report includes three main documents: a protocol and resolution with notes, a top secret information note, and a top secret protocol from 30 July 1970. The first section includes the Politburo's approval of the delegation's negotiations with Cuba, proposals to restructure economic partnership, and the Bulgarian delegation's statements on miscommunication between Cuba and Bulgaria. The second section, top secret information note, summarizes important exchanges during the Bulgarian visit to Cuba (e.g. Zhivkov's discussion on the importance of economic cooperation (COMECON) to the development of socialism). The third section, the top secret protocol, includes portions of a conversation between Bulgarian delegation and Cuban Politburo members. Castro summarizes ideas exchanged during the state visit.

An excerpt on Cuba from Communist Party of the Soviet Union General Secretary Leonid I. Brezhnev's secret speech, “About Current Problems of the International Situation and the Struggle of the CPSU for the Cohesion of the World Communist Movement,” to the CPSU CC Plenum on 9 April 1968.

In a conversation with Charles Bartlett (a journalist who had befriended President Kennedy), Drozniak learns more of the Cuban Crisis situation and of US-USSR relations, including that the steps taken to address the crisis (the quarentine of Cuba) were implemented by Kennedy in the atmosphere of great pressure from the public opinion.

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.

Jelen compiles this report from his conversation with the USSR Ambassador [Aleksandr] Alekseyev. Alekseyev believes that the Soviet declaration from the 11th removed the danger of more serious [US] military action [against Cuba]. At the same time, he takes into account the possibility of the attempts of staging subversive landings, as well as the possibility of activities [carried out] by Cuban emigrant pirates against the ships. The two also discuss economic aid to Cuba, especially in the form of foodstuffs.

Boissevain writes of the continued presence of Russian military and economic advisors in Cuba, which are causes for concern. The ongoing question is for how long they will remain in Cuba and when do they leave. Boissevain says that last week approximately 1,000 advisors left the country, but with some note of resistance. However, the departure for them is a great relief for the average Cuban and Russian alike.

In preparation for an upcoming NATO Council meeting, the US and West German representatives discuss the current situation in Cuba - the developments of Soviet missile bases thus far, the United Nations negotiations in process, talks (letters) between Kennedy and Khrushchev, American surveillance planes coming under fire, and Soviet ships approaching the blockade line. Giving these circumstances, they feel the United States will perhaps feel compelled to resort to military action shortly.

A cable from the West German Embassy in Washington, D.C. discussing the threat to American security posed by an "offensive" Soviet base in Cuba, insights provided by recent intelligence, the purpose and the impact of the American blockade of Cuba, negotiations that have taken place at the United Nations, Soviet intentions during the Cuban crisis and, finally, a comparison of Cuba to the situation in Berlin.

The East German Ambassador in Moscow, Rudolf Dölling, writes to the East German Secretary of State (First Deputy Foreign Minister), Otto Winzer, about several diplomatic meetings that have been held concerning US-Cuban relations and tensions. One of these meetings is between several Eastern European countries: East Germany, Poland, Bulgaria, USSR, Romania and Czechoslovakia.

In conversation with a high officials from the State Department about the prospects of the Cuban situation, three hypotheses about the future Soviet comportment are discussed: 1) abandon entirely the government of Fidel Castro to its own fate; 2) limit itself to leave constituted in Cuba a socialist regime, based on a well-structured communist party and endowed with a repressive political machine, as a political base of propaganda and infiltration in Latin America and 3) to intensify Soviet technical and economic assistance in a manner to transform Cuba into a living demonstration of the efficacy of communism as an instrument of economic development in Latin America. The letter goes on to describe these three points in more detail.