At the Yalta Conference on 11 February 1945 , an agreement was reached on the repatriation of citizens from the signatory states , the US , the UK , and the USSR , back to their country of origin . As Yugoslavia was not a signatory , the repatriation of Yugoslav citizens was not mentioned in the agreement . At the time of the Axis retreat from occupied Yugoslavia , the British 5th Corps of the 8th Army was stationed in southern Austria , which was within the area of authority of Field Marshal Harold Alexander . The Yugoslav Army reached southern Carinthia in early May and declared it a part of Yugoslavia . This caused strained relations with the British , who supported an independent Austria in prewar borders . Due to Yugoslav refusal to withdraw from Austrian Carinthia , as well as the Italian city of Trieste , the possibility of an armed conflict between the British forces and the Partisans emerged
Yalta Conference
Yalta Conference
Bleiburg repatriations