ROME – As several western nations, including the United States, have given Ukraine approval to use their weapons in strikes on Russian territory, the Vatican’s top diplomat has warned that such moves would mark a serious escalation in the Ukraine war and represent a “disturbing” prospect.

Speaking to journalists on the margins of a book presentation in Milan this week, Italian Cardinal Piero Parolin, the Vatican’s Secretary of State, said of the use of NATO weaponry against Russia, “I think it should concern every person that cares about the fate of our world.”