On which date was the Warsaw Pact signed?

The Warsaw Treaty Organization, officially the Treaty of Friendship, Cooperation and Mutual Assistance, commonly known as the Warsaw Pact, was a collective defense treaty signed in Warsaw, Poland between the Soviet Union and seven other Eastern Bloc socialist republics of Central and Eastern Europe in May 1955, during the Cold War. The Warsaw Pact was the military complement to the Council for Mutual Economic Assistance (CoMEcon), the regional economic organization for the socialist states of Central and Eastern Europe. The Warsaw Pact was created in reaction to the integration of West Germany into NATO (North Atlantic Treaty Organization) in 1955 per the London and Paris Conferences of 1954, but it is also considered to have been motivated by Soviet desires to maintain control over military forces in Central and Eastern Europe.

On 14 May 1955, the USSR and other seven European countries "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" established the Warsaw Pact, declaring that: "a remilitarized Western Germany and the integration of the latter in the North-Atlantic bloc increase the danger of another war and constitutes a threat to the national security of the peaceable states; in these circumstances the peaceable European states must take the necessary measures to safeguard their security".