Pope Francis on Sunday honoured the 100th anniversary of the slaughter of Armenians by calling it "the first genocide of the 20th century," a politically explosive declaration that will certainly anger Turkey.
Francis, who has close ties to the Armenian community from his days in Argentina, defended his pronouncement by saying it was his duty to honour the memory of the innocent men, women, children, priests and bishops who were "senselessly" murdered by Ottoman Turks.
"Concealing or denying evil is like allowing a wound to keep bleeding without bandaging it," he said at the start of a Mass on Sunday in the Armenian Catholic rite in St Peter's Basilica honoring the centenary.
Historians estimate that up to 1.5 million Armenians were killed by Ottoman Turks around the time of World War I, an event widely viewed by scholars as the first genocide of the 20th century.
Turkey, however, refuses to call it a genocide and has insisted that the toll has been inflated, and that those killed were victims of civil war. Turkey's embassy to the Holy See canceled a planned news conference on sunday, presumably after learning that the pope would utter the word "genocide" over its objections.
Several European countries recognize the massacres as genocide, though Italy and the US, for example, have avoided using the term officially given the importance they place on Turkey as an ally.
Francis is not the first pope to call the massacre a genocide. In his remarks, Francis cited a 2001 declaration signed by St John Paul II and the Armenian church leader, Karenkin II, which said the deaths were considered "the first genocide of the 20th century."
Emeritus Pope Benedict XVI, whose ties with Turkey and the Muslim world were initially strained, avoided using the "g-word" during his pontificate.