Speaking before tens of thousands gathered in St. Peter’s Square for Pentecost Mass, the pontiff warned that nationalism risks “eroding the bonds of fraternity and inflaming divisions among peoples.” He called on the Holy Spirit to “break down barriers and tear down the walls of indifference and hatred.”

The comments are in keeping with Pope Leo XIV’s broader mission to position the Catholic Church as a force for peace in an increasingly polarized world. Since his election, the pope has frequently addressed themes of global solidarity, migration, and interfaith dialogue, often pushing back against populist and nationalist rhetoric in both Western and non-Western nations.

“Let us not be seduced by the false promises of isolation,” he said. “Peace is not found in separation, but in the shared dignity of all people.”

His remarks come as nationalist parties gain traction in several countries, sparking concern among human rights groups and religious leaders over growing political fragmentation and xenophobia.

VATICAN CITY — In a powerful and widely anticipated moment, Pope Leo XIV delivered his first Sunday address from the balcony of St. Peter’s Basilica, using the occasion to issue an emotional appeal for peace across war-torn regions of the world.

“Let there be no more war,” the newly elected pontiff declared to thousands gathered in St. Peter’s Square and millions watching globally. “Let us choose dialogue over destruction, reconciliation over revenge, and healing over hatred.”

The pope specifically called for a “lasting peace” in the ongoing war between Russia and Ukraine, emphasized the urgent need for a ceasefire in Israel and Gaza, and welcomed the recent ceasefire agreement between India and Pakistan, which he described as a “sign of hope.”

This was Pope Leo XIV’s first major public appearance since his historic election as the first American-born pope, drawing global attention not only for its symbolic importance but also for the tone he set for his papacy: one of humility, diplomacy, and global outreach.

Observers noted the new pontiff’s firm but compassionate demeanor, which resonated strongly in a time of geopolitical tension. The Vatican confirmed that the pope would meet with several international leaders and religious delegations in the coming days to further encourage peacebuilding efforts.

In a nod to his American roots, Pope Leo also briefly addressed the faithful in English, expressing gratitude for the overwhelming support and prayers he has received since his election.

The Vatican said Pope Leo XIV will continue focusing on global humanitarian concerns, interfaith dialogue, and social justice issues as top priorities in the early phase of his pontificate.