Hungary–Romania relations
During World War II, Hungary and Romania became allies and participated in the war against the Soviet Union. But after the coup on 23 August 1944 Romania switched sides and fought against Hungary. Consequently, Soviet and Romanian troops invaded Hungary, occupied Northern Transylvania by October 1944 and re-established the Romanian administration in the region in March 1945. The 1947 Treaty of Paris reaffirmed the borders between Romania and Hungary as originally defined in Treaty of Trianon 27 years earlier, thus confirming the return of Northern Transylvania to Romania.
Visarion Puiu
Romania entered World War II in 1941, and Puiu served as Metropolitan of occupied Transnistria at Odessa from 16 November 1942 to 14 December 1943. There, he reopened churches closed by the Soviet authorities, helped the needy, the poor and children, and educated people in the Orthodox faith. He disregarded the ongoing extermination of the Jews in the region by the Romanian authorities. In August 1944, he was in Zagreb (present-day Croatia) for the ordination of an Orthodox bishop there, accompanied by a handful of Romanian priests. He sent the priests back to Romania, sure they would be safe, but decided to flee to the west, fearing punishment from the Soviets for his wartime religious activity in Transnistria. Indeed, a People's Tribunal, the Romanian counterpart of the Nuremberg military tribunals, sentenced him to death "in absentia" for war crimes on 21 February 1946.