In December 1944 the Anti-fascist Assembly for the National Liberation of Macedonia (ASNOM) proclaimed the People's Republic of Macedonia as part of the "People's Federal Republic of Yugoslavia". ASNOM remained an acting government until the end of the war. The Macedonian alphabet was codified by linguists of ASNOM, who based their alphabet on the phonetic alphabet of Vuk Stefanović Karadžić and the principles of Krste Petkov Misirkov. During the civil war in Greece (1946–1949), Macedonian communist insurgents supported the Greek communists. Many refugees fled to the Socialist Republic of Macedonia from there. The state dropped "Socialist" from its name in 1991 when it peacefully seceded from Yugoslavia.