<P> The Tripartite Pact, also known as the Berlin Pact, was an agreement between Germany, Italy and Japan signed in Berlin on 27 September 1940 by, respectively, Joachim von Ribbentrop, Galeazzo Ciano and Saburō Kurusu . It was a defensive military alliance that was eventually joined by Hungary (20 November 1940), Romania (23 November 1940), Bulgaria (1 March 1941) and Yugoslavia (25 March 1941), as well as by the German client state of Slovakia (24 November 1940). Yugoslavia's accession provoked a coup d'état in Belgrade two days later, and Italy and Germany responded by invading Yugoslavia (with Bulgarian, Hungarian and Romanian assistance) and partitioning the country . The resulting Italo - German client state known as the Independent State of Croatia joined the pact on 15 June 1941 . </P> <P> The Tripartite Pact was directed primarily at the United States . Its practical effects were limited, since the Italo - German and Japanese operational theatres were on opposite sides of the world and the high contracting powers had disparate strategic interests . Some technical cooperation was carried out, and the Japanese declaration of war on the United States propelled, although it did not require, a similar declaration of war from all the other signatories of the Tripartite Pact . </P> <P> The Governments of Japan, Germany, and Italy consider it as the condition precedent of any lasting peace that all nations in the world be given each its own proper place, have decided to stand by and co-operate with one another in their efforts in Greater East Asia and the regions of Europe respectively wherein it is their prime purpose to establish and maintain a new order of things, calculated to promote the mutual prosperity and welfare of the peoples concerned . It is, furthermore, the desire of the three Governments to extend cooperation to nations in other spheres of the world that are inclined to direct their efforts along lines similar to their own for the purpose of realizing their ultimate object, world peace . Accordingly, the Governments of Japan, Germany and Italy have agreed as follows: </P> <P> ARTICLE 1 . Japan recognizes and respects the leadership of Germany and Italy in the establishment of a new order in Europe . </P>

September 27 1940 germany italy and japan sign the tripartite pact