The Yalta Conference had granted the Soviet Union a predominant interest in Romania , the Paris Peace Treaties failed to acknowledge Romania as a co-belligerent , ( as the Romanian army had fought viciously against the Soviets for the better part of the war , changing sides only when the tides started to turn . The Communists , as all political parties , played only a minor role in the first Michael 's wartime governments , headed by General Constantin Sănătescu , though their presence increased in the one led by Nicolae Rădescu . This changed in March 1945 , when Dr. Petru Groza of the Ploughmen 's Front , a party closely associated with the Communists , became prime minister . His government was broad-based on paper , including members of most major prewar parties except the Iron Guard . However , the Communists held the key ministries , and most of the ministers nominally representing non-Communist parties were , like Groza himself , fellow travelers
Yalta Conference
Yalta Conference
Socialist Republic of Romania