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 letter describing the state of socialist and communist movements in Latin America with respect to their organized struggle against the imperial influence of the US. The letter indicates that the growth of youth, workers' and women's movements in Latin America is conducive to the development of stronger ties with the socialist countries around the world. The letter suggests that a strategic approach towards Latin America should be adopted in establishing cooperation in all spheres of life: economic, political, and cultural. An emphasis is placed on the gradual development of close relations with Latin American communist parties.