Northern Transylvania Transylvania, and in 1920 the Treaty of Trianon assigned Transylvania to the Kingdom of Romania. In June 1940, after Romania was forced (as a consequence of Molotov–Ribbentrop Pact) to settle a claim to the Soviet Union over Bessarabian and Bukovinian territories, Hungary attempted to regain Transylvania, which it had lost in World War I. Germany and Italy pressured both Hungary and Romania to resolve the situation in a bilateral agreement. The two delegation met in Turnu Severin but the negotiations failed due to a demand for a 60,000 square kilometers territory on Hungarian side and only a population exchange on
History of Transylvania (and briefly under Habsburg suzerainty) until 1602. The younger Stephen Báthory, a Hungarian Catholic who later became King Stephen Báthory of Poland, tried to maintain the religious liberty granted by the Edict of Turda but interpreted this obligation in an increasingly restricted sense. Under Sigismund Báthory, Transylvania entered the Long War, which began as a Christian alliance against the Turks and became a four-sided conflict in Transylvania involving the Transylvanians, Habsburgs, Ottomans and the Romanian voivod of Wallachia led by Michael the Brave. Michael gained control of Transylvania (supported by the Szeklers) in October 1599 after the Battle of Șelimbăr,