In 1941 during World War II Yugoslavia was invaded and occupied by the Axis powers, and the Yugoslav government fled into exile in London. Soon afterward, the Yugoslav resistance, the Partisans, was formed. The Partisans did not support the Yugoslav government-in-exile and initially used a number of different flags until finally one was universally adopted. The new flag was the Yugoslav blue-white-red tricolor with a red star occupying the center of the white field, and with the dimensions altered to 1:2 instead of 2:3. The Partisans were recognized by the Allies in late November 1943 (Tehran Conference) and the name of the Yugoslav state was altered to Democratic Federal Yugoslavia (DFY). The old flag continued to be used by the government-in-exile (up until its merge with the Partisan government, the NKOJ in 1944), by its diplomatic representatives, and by the western Allies until 1945 - while in Yugoslavia, the version with the red star was primarily in use.