Vice President JD Vance led the American delegation for Leo's inaugural Mass in St. Peter’s Square before an estimated 200,000 people.

In historic inaugural Mass, first American pope signals shift with call for unity and peace, traditionalist tone — but offers prayers only for Gaza, not Israeli hostages

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.