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.

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 calls to attention the rude and violent tone of the proclamations of support to Cuba on the part of China contrasting with the relative moderation of the USSR and of its satellites. Pinto believes Mao is "taking a shot" at Khrushchev.

Two department heads of the Cuban general staff (revolutionary education and film departments) spoke with the military attache to the Chinese embassy in Cuba. They discussed morale of the Cuban troops, relations with other socialist countries and the American airplane shot down over Cuba.

A conversation between Huang Wenyou, Head of Socialist Country Division of the Cuban Foreign Ministry José Fuxá and Cecilio Martinez (previously the first secretary of the Embassy in China) in which they discuss Cuba-Chinese relations of support and negotiations.