The Balkan Pact was a treaty signed by Greece, Turkey, Romania and Yugoslavia—the Balkan Entente—on February 9, 1934 in Athens, aimed at maintaining the geopolitical status quo in the region following World War I. The signatories agreed to suspend all disputed territorial claims against each other and their immediate neighbors following the aftermath of the war and a rise in various regional ethnic minority tensions. Other nations in the region that had been involved in related diplomacy refused to sign the document, including Italy, Albania, Bulgaria, Hungary, and the Soviet Union. Nonsignatories were mostly those governments with territorial expansion in mind. The pact became effective on the day it was signed. It was registered in the League of Nations Treaty Series on October 1, 1934.