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.
Gherman Pântea
During the first years of World War II, Romania was caught between the hostile governments of Nazi Germany and the Soviet Union ("see Molotov–Ribbentrop Pact, Romania in World War II"). In that context, the Soviets communicated an ultimatum to Romania, and occupied Bessarabia (June 1940). Pântea and his family escaped to Bucharest, where the refugee politician continued his work with the Bessarabian Circle. Later that year, German pressures resulted in the loss of Northern Transylvania, which confirmed the break-up of Greater Romania. By then, the Bessarabian Circle represented a 120,000-strong refugee community, having Inculeț and Daniel Ciugureanu as Presidents, Bosie-Codreanu and Pântea as Vice Presidents.