March 07, 1967
Communist Party of Czechoslovakia, Record of Conversation with Secretary and Member of the Politboro of the Central Committee of the Communist Party of Bolivia, Jorge Kolle, Prague
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."
May 30, 1967
Communist Party of Czechoslovakia (CPCz), Record of Conversation between Head of the International Department of the CPCz Central Committee and Member of the Central Committee of the Bolivian Communist Party, Aldo Flores, Prague
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."