The Kingdom of Yugoslavia attempted to maintain neutrality during the period preceding World War II. Milan Stojadinović, the prime minister, tried to actively woo Adolf Hitler while maintaining the alliance with former Entente Powers, UK and France. Nonwithstanding overtures to Germany, Yugoslav policy was not anti-Semitic: for instance, Yugoslavia opened its borders to Austrian Jews following the Anschluss. Under increasing pressure to yield to German demands for safe passage of its troops to Greece, Yugoslavia signed the Tripartite Pact with Germany and Italy, like Bulgaria and Hungary. Unlike the other two, however, the signatory government of Maček and Cvetković was overthrown three days later in a British-supported coup of patriotic, anti-German generals. The new government immediately rescinded the Yugoslav signature on the Pact and called for strict neutrality. German response was swift and brutal: Belgrade was bombed without the declaration of war on 6 April 1941 and German, Italian, Hungarian and Bulgarian troops invaded Yugoslavia.