Bulgarian-Polish Treaty of 1967 on Friendship, Cooperation, and Mutual

a treaty signed in Sofia on Apr. 6, 1967, by T. Zhivkov, first secretary of the Central Committee of the Bulgarian Communist Party and chairman of the Council of Ministers of the People’s Republic of Bulgaria, for Bulgaria, and W. Gomulka, secretary general of the Central Committee of the United Polish Workers’ Party and member of the State Council of the Polish People’s Republic (PPR), and J. Cyrankiewicz, chairman of the PRR Council of Ministers, for Poland. It was concluded for 20 years. The contracting parties stated that while the German Democratic Republic is a security factor, the West German forces of militarism and revanche are a threat to peace, pointed out the important role played by the Bulgarian-Polish Treaty of 1948, and noted the changes that have taken place in Europe and the world in the past 20 years. The parties pledged, in conformity with the principles of socialist internationalism and on the basis of equality, sovereignty, and noninterference in each other’s internal affairs, to continue strengthening friendship and all-around cooperation between the two states, coordinating their national economic plans, broadening specialization and cooperation in production, and developing cooperation within the framework of the Council for Mutual Economic Assistance, as well as in cultural and other relations. The two parties declared that they would adopt all measures toward increasing the strength and cohesion of the world socialist commonwealth and consistently implement the policy of peaceful coexistence among states with different social systems. They pledged to continue, in conformity with the aims and principles of the UN Charter, their efforts toward ensuring peace and security, reducing international tension, ending the arms race, bringing about universal and total disarmament, eliminating colonialism and neocolonialism, ensuring peace in Europe, and creating an effective European security system. In conformity with the Warsaw Pact of 1955, the parties pledged to ensure the inviolability of the frontiers of the two states and adopt all necessary measures to prevent aggression by the forces of militarism and revanche. In case of an armed attack on one of the parties by any state or group of states, the other party will immediately extend military and any other assistance.