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.

The report introduces Czechoslovak's assistance in the Operation MANUEL after the isolation of socialist Castro regime. Cuba looked for alternative routes in Europe in order to promote and influence the revolutionary movement in Latin America. Czechoslovakia assistance in the operation is of a strictly technical nature and its intelligence service is doing its utmost to protect the interests of the country by securing all technical matters. The report says that terminating the assistance was not possible for both practical and political reasons-- all direct flights between Czechoslovakia and Cuba would be suspended and a drastic cooling off of relations between two governments. Czechoslovak's refusal in assisting the operation would be interpreted as a political decision to suspend assistance to the national liberation movement in Latin America countries. However, the reports says that the assistance of Czechoslovak intelligence service to the operation is in no way amounts to agreeing with its political content and constitutes a minor aspect of intelligence work. The Soviet intelligence was also involved in organizing the operation in Moscow and offered assistance to its Cuban counterpart.