His mandate was marked by the signing of the Treaty of Trianon with Hungary, and initial steps leading to the creation of the Little Entente—formed by Romania with Czechoslovakia and the Kingdom of Serbs, Croats and Slovenes. It was also at this stage that Romania and the Second Polish Republic inaugurated their military alliance ("see Polish-Romanian Alliance"). The goal to create a "cordon sanitaire" against Bolshevist Russia also brought him and his Minister of the Interior Argetoianu to oversee repression measures against the group of Socialist Party of Romania members who voted in favor of joining the Comintern (arrested on suspicion of "attempt against the state's security" on May 12, 1921). This came after a long debate in Parliament over the imprisonment of Mihai Gheorghiu Bujor, a Romanian citizen who had joined the Russian Red Army in Bessarabia during the later stages of the October Revolution, and who had been tried for treason. Argetoianu, who proclaimed communism to be "over in Romania", later indicated that Averescu and other members of the cabinet were hesitant about the crackdown, and that he ultimately resorted to taking initiative for the arrests — thus presenting his fellow politicians with a "fait accompli".