The Warsaw Pact, formally titled the Treaty of Friendship, Cooperation and Mutual Assistance, was a significant Cold War alliance. It was signed by eight Soviet bloc nations (Albania, Bulgaria, Czechoslovakia, East Germany, Hungary, Poland, Romania and the Soviet Union) on May 14th 1955. The formation of the Warsaw Pact was triggered by West Germany’s admission to NATO just days earlier:
The contracting parties, reaffirming their desire for the establishment of a system of European collective security based on the participation of all European states, irrespective of their social and political systems, which would make it possible to unite their efforts in safeguarding the peace of Europe;
Mindful, at the same time, of the situation created in Europe by the ratification of the Paris agreements, which envisage the formation of a new military alignment in the shape of “Western European Union,” with the participation of a remilitarized Western Germany and the integration of the latter in the North-Atlantic bloc, which increased the danger of another war, and constitutes a threat to the national security of the peaceable states;
Being persuaded that in these circumstances, the peaceable European states must take the necessary measures to safeguard their security and in the interests of preserving peace in Europe; guided by the objects and principles of the Charter of the United Nations;
Being desirous of further promoting and developing friendship, cooperation and mutual assistance in accordance with the principles of respect for the independence and sovereignty of states and of noninterference in their internal affairs, have decided to conclude the present Treaty of Friendship, Cooperation and Mutual Assistance…
The Contracting Parties undertake, in accordance with the Charter of the United Nations organisation, to refrain in their international relations from the threat or use of force, and to settle their international disputes peacefully and in such manner as will not jeopardise international peace and security.
The Contracting Parties declare their readiness to participate in a spirit of sincere cooperation in all international actions designed to safeguard international peace and security, and will fully devote their energies to the attainment of this end. [They] will furthermore strive for the adoption, in agreement with other states which may desire to cooperate in this, of effective measures for universal reduction of armaments and prohibition of atomic, hydrogen and other weapons of mass destruction.
The Contracting Parties shall consult with one another on all important international issues affecting their common interests, guided by the desire to strengthen international peace and security. They shall immediately consult with one another whenever, in the opinion of any one of them, a threat of armed attack on one or more of the Parties to the Treaty has arisen, in order to ensure joint defence and the maintenance of peace and security.
In the event of armed attack in Europe on one or more of the Parties to the Treaty by any state or group of states, each of the Parties to the Treaty, in the exercise of its right to individual or collective self-defence in accordance with Article 51 of the Charter of the United Nations, shall immediately, either individually or in agreement with other Parties to the Treaty, come to the assistance of the state or states attacked, with all such means as it deems necessary, including armed force. The Parties to the Treaty shall immediately consult concerning the necessary measures to be taken by them jointly in order to restore and maintain international peace and security…
The Contracting Parties have agreed to establish a Joint Command of the armed forces that by agreement among the Parties shall be assigned to the Command, which shall function on the basis of jointly established principles. They shall likewise adopt other agreed measures necessary to strengthen their defensive power, in order to protect the peaceful labours of their peoples, guarantee the inviolability of their frontiers and territories, and provide defence against possible aggression.
For the purpose of the consultations among the Parties envisaged in the present Treaty, and also for the purpose of examining questions which may arise in the operation of the Treaty, a Political Consultative Committee shall be set up, in which each of the Parties to the Treaty shall be represented by a member of its Government or by another specifically appointed representative…
The Contracting Parties undertake not to participate in any coalitions or alliances and not to conclude any agreements whose objects conflict with the objects of the present Treaty. The Contracting Parties declare that their commitments under existing international treaties do not conflict with the provisions of the present Treaty.
The Contracting Parties declare that they will act in a spirit of friendship and cooperation with a view to further developing and fostering economic and cultural intercourse with one another, each adhering to the principle of respect for the independence and sovereignty of the others and non-interference in their internal affairs.
The present Treaty is open to the accession of other states, irrespective of their social and political systems, which express their readiness by participation in the present Treaty to assist in uniting the efforts of the peaceable states in safeguarding the peace and security of the peoples…
Done in Warsaw on May 14th 1955.