Pope Leo XIV will preside over his inaugural mass today in front of St Peter’s Basilica, which marks the formal start of his papacy. JD Vance, Marco Rubio and Volodymyr Zelenskyy are attending.

Pope Leo XIV, the first American pontiff of the Roman Catholic Church, will celebrate his inaugural mass on Sunday, according to the Vatican. The mass, called the Holy Mass for the Beginning of the Pontificate,

Vice President JD Vance was expected to be among the dignitaries attending the Mass in St. Peter’s Square. It marks the start of the pontificate of the first American to lead the Roman Catholic Church.