There is an Armenian Catholic Archeparchy in Lviv, though it has been vacant since World War II. Armenian Catholics in Ukraine are few in number, and are often entrusted to the pastoral care of priests of other Catholic Churches.
Catholic Churches were severely persecuted in Ukraine while the country was part of the Soviet Union, and the renewal of conflict between Russia and Ukraine in the 2010s brought with it fears of ecclesial conflict and persecution.
The Ukrainian Greek Catholic Church was outlawed under Soviet rule, from 1946 to 1989, and the Ruthenian Catholic Church was suppressed in 1949.
In 2014, after the Russian annexation of Crimea and armed conflicts in other border regions between Ukrainian military forces, and pro-Russian rebel groups and Russian soldiers, the then-apostolic nuncio to Ukraine warned of a return of persecution because of Russia's expansion into Ukrainian territory.
“The danger of repression of the Greek-Catholic Church exists in whatever part of Ukraine Russia might establish its predominance or continue through acts of terrorism to push forward with its aggression,” Archbishop Thomas Gullickson said Sept. 23, 2014.
Archbishop Gullickson was nuncio to Ukraine from 2011 to 2015, and he retired in 2020, at age 70.
“Any number of statements emanating from the Kremlin of late leave little doubt of Russian Orthodox hostility and intolerance toward Ukrainian Greek-Catholics,” he said in September 2014 to directors of Aid to the Church in Need.
“There is no reason for excluding the possibility of another wholesale repression of the Ukrainian Greek-Catholic Church as came about in 1946 with the complicity of the Orthodox brethren and the blessing of Moscow,” he stated.
Many Roman Catholic and Greek Catholic clergy were forced to leave Crimea after its annexation. Both Roman and Greek Catholics faced difficulties in properly registering ownership of church property and in ensuring legal residency for their clergy.
Under the Soviet Union, 128 priests, bishops, and nuns of the Ruthenian Catholic Church were put in prisons or sent into exile in Siberia. The eparchy of Mukachevo had 36 priests martyred during the persecution.
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Blessed Theodore Romzha was Ruthenian Bishop of Mukachevo for three years before he was assassinated in 1947 by the NKVD on the orders of Nikita Khrushchev, who was then first secretary of the Communist Party of Ukraine.
Blessed Romzha was among a group of more than 20 Ukrainian martyrs of the 20th century who were beatified by St. John Paul II during his 2001 visit to Ukraine.
The Cathedral of the Resurrection of Christ in Kyiv is the mother church of the Ukrainian Archeparchy of Kyiv-Halych. Built in 2011, an air raid shelter beneath the cathedral has been harboring Major Archbishop Shevchuk during Russia's assault on Kyiv.
The Cathedral Basilica of the Assumption in Lviv is the seat of the Archbishop of Lviv. The building dates to the 14th century, while the city was part of the United Kingdom of Poland. It was named a basilica in 1910.