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.

As Pope Leo XIV is formally inaugurated, he vows to work for unity and peace at a time of polarization in the Catholic Church and the wider world, with leaders including Vice President Vance and Ukraine's Zelensky in attendance.