The Treaty of Non-Aggression between Germany and the Soviet Union, also known as the Molotov–Ribbentrop Pact (after the foreign minister of the Soviet Union, Vyacheslav Molotov, and the German foreign minister, Joachim von Ribbentrop), was signed in Moscow on 23 August 1939. With the outbreak of World War II looming, the Soviet Union and Germany agreed to remain neutral in the event that either country should be attacked by a third party. The pact also included a secret protocol which divided the states of Northern and Eastern Europe into German and Soviet "spheres of influence". However, the agreement was not to last. “Hitler broke his pact with Russia” when he ordered Germany to invade the Soviet Union on 22 June, 1941.