The formal inauguration of Leo XIV, the first ever American pope, is underway in a special Mass in St. Peter’s Square attended by world leaders, royalty, and tens of thousands of believers. The 267th pontiff arrived at the Vatican on the popemobile and was welcomed by cheers from the huge crowds as he toured St.

President Bola Ahmed Tinubu of Nigeria spoke as tens of thousands flock to Vatican in Rome, Italy, for Pope Leo XIV's inauguration on Sunday, May 18.

The new leader of the Catholic Church, Pope Leo XIV, has officially begun his papacy with a ceremonial Mass in St. Peter's Square. In his homily, he called for unity and more care for nature and the poor.