the trial. The enlistment of ethnic Germans into Nazi German units, as approved by Antonescu, was used as a pretext for a Soviet-led expulsion of Germans from Romania.Cioroianu, pp. 266–267 On similar grounds, the Soviet occupation forces organized the capture of certain Romanian citizens, as well as the return of war refugees from Romania proper into Bessarabia and Northern Bukovina. Both the arrestees and the returnees were often deported deeper into the Soviet Union. As part of its deteriorating relationship with Romanian Roman Catholics, and urged on by the Soviets, the communist cabinet of Petru Groza also deemed Apostolic Nuncio Andrea Cassulo a collaborator of Antonescu and a persona non grata, based on transcripts of the Cassulo-Antonescu conversations. It also used such allegations to pressure several Greek-Catholic clergymen into accepting union with the Romanian Orthodox Church. Nevertheless, Romanian-born Holocaust historian Radu Ioanid notes, few Romanians involved in organizing the Holocaust were prosecuted, and, of those, none were executed after the Antonescu trial. He attributes this to nationalist resistance within the administrative and judicial apparatus, to communist fears of alienating a too large number of people, to the emigration of Zionist survivors, and to the open hostility of some communists toward liberal Jewish community leaders. Jews also faced conflict with the new authorities and with the majority population, as described by other researchers. There were, nonetheless, sporadic trials for Holocaust-related crimes, including one of Maria Antonescu. Arrested in September 1944 and held 1945–1946 in Soviet custody, she was re-arrested at home in 1950, tried and ultimately found guilty of economic crimes for her collaboration with the Central Jewish Office. Five years later, she was sent into internal exile, and died of heart problems in 1964. After 1950, a large number of convicted war criminals, even some sentenced to life imprisonment, were deemed fit for "social cohabitation" (that is, fit to live amongst the general population) and released, while some suspects were never prosecuted. In communist historiography Although the Marxist analytical works of the increasingly marginalized communist figure Lucrețiu Pătrășcanu make isolated mentions of the Holocaust, the heavily politicized official discourse inspired by Soviet historiography interpreted Romania's wartime evolution exclusively based on the Marxist-Leninist idea of class conflict. In this context, the main effort to document and expose the Antonescu-era massacres came from Jewish Romanians. This began in 1945, when Jewish journalists Marius Mircu and Maier Rudrich contributed first-hand testimonies. In 1946–1948,