The head of CPCz’s international department and Aldo Flores, a member of the PCB Central Committee discuss Cuban-sponsored guerrilla warfare in Bolivia. Flores described several years of close collaboration between the Bolivian and Cuban communist parties for the training of guerrilla groups in Bolivia, which had recently gone awry as "Cuban officials built their own organization in Bolivia, composed entirely of their own people."

PCB Politburo member Jorge Kolle Cueto asks on 7 March 1967 to inform the Czechoslovak Communist Party, "on behalf of the CC of the Bolivian CP," regarding "the situation in Bolivia… and his recent meeting with Fidel Castro." After four pages of discussion regarding the depressing internal political situation under 1964 coup leader, General René Barrientos, Kolle announced that "the party must necessarily prepare for the possibility of armed struggle in order to participate in the attempt to overthrow the current regime together with other leftist forces."

In a conversation with the head of the CPCz international department in May 1963, PCB First Secretary Mario Monje reveals the extent of his party’s modus vivendi with Paz Estenssoro’s governing Revolutionary Nationalist Movement (MNR). According to Monje, the Bolivian president was "heavily involved" with Operation Matraca, an ongoing Cuban-sponsored guerrilla operation targeting the military governing in neighboring Peru.