In his 4 January 1947 conversation with the United States Secretary of State George Marshall , Romania 's Ambassador Mihai Ralea received an official American reproach for having " broken the spirit and letter " of the Moscow Conference and the Yalta Agreement . Although Ralea , a Ploughmen 's Front member and conjectural ally of the Communists , expressed concern over the fact that the United States were reproving Romania , he also appealed to the United States not to allow the country to be left behind the Iron Curtain . In August 1946 , Berry attested that Groza intended to tighten connections with the other countries in the Balkans and Eastern Europe , as the basis for a customs union . Giurescu compares this with the plan of a federation between Bulgaria and Yugoslavia , advocated by Georgi Dimitrov and Josip Broz Tito , which was frustrated by the opposition of Joseph Stalin , and discarded altogether following the Tito-Stalin Split
Yalta Agreement
Yalta Conference
1946 Romanian general election