Book prof. Bogdan Bocürkiva is devoted to the study of the circumstances of the official liquidation of the UGCC by Soviet state power through its violent "reunification" with the Russian Orthodox Church at the so-called. "Lviv Cathedral" in 1946 and the similar "Orthodoxization" of the Mukachevo diocese in 1949, the destruction of monasteries and monastic congregations, as well as the destruction of the structures of this Church in the territory of modern Poland and Slovakia.