Leo, the first American and second Latin American pope, is holding his inaugural mass at the Vatican after waving to the faithful on the popemobile.

Pope Leo XIV will formally take up his role as leader of the global Catholic Church on Sunday, with a Mass in St. Peter's Square that will draw tens of thousands of well-wishers, including dozens of world leaders and European royalty.

Pope Leo XIV, history’s first American pope, has vowed to work for unity so that the Catholic Church becomes a sign of peace in the world. The