An open-topped popemobile carrying Pope Leo XIV drove through St Peter's Square at the Vatican on Sunday morning, ahead of his inaugural mass.

VATICAN CITY (AP) — Pope Leo XIV vowed Sunday to work for unity in a polarized Catholic Church and world, as history’s first American pope offered a message of healing during an inaugural Mass in St. Peter’s Square before an estimated 200,000 pilgrims, presidents, patriarchs and princes.