Pope Leo XIV appealed for “no more war” in a message to world powers during his first Sunday address at St. Peter’s Square at noon.
He noted that it had been almost 80 years to the day since the “immense tragedy” of World War II had ended. He quoted Pope Francis, his predecessor, who often referred to the current global wave of violence as “a third world war in pieces.”
The Pope also recited the Regina Caeli prayer, in honour of the Virgin Mary, to the crowd in St Peter’s Square.
Pope Leo was chosen as the new leader of the Catholic Church on Thursday following the death of his predecessor, Pope Francis, and a two-day conclave in Vatican City.
On Saturday, he visited a shrine outside Rome before praying at Francis’ tomb inside the basilica of Santa Maria Maggiore.
Pope Leo will be formally inaugurated at a Mass in St Peter’s Square next week on 18 May.
Three years ago, as Bishop Robert Prevost, he denounced Russia’s full-scale invasion of Ukraine as an imperialist war and condemned crimes against humanity he said were being committed there.
On Sunday, he restricted himself to echoing his predecessor, Francis, in calling for peace.
“I would also like to address the powerful people of the world, repeating the always current call: ‘no more war’,” he told the crowd from the central balcony of St Peter’s Basilica.
“The immense tragedy of the Second World War ended 80 years ago…now we’re facing the tragedy of a third world war in pieces.”
The pontiff continued: “I carry in my heart the suffering of the beloved Ukrainian people.
“May whatever is possible be done to reach an authentic, true and lasting peace as quickly as possible. May all the prisoners be freed. May children return to their families.
“And I am deeply hurt by what is happening in the Gaza Strip.
“May a ceasefire immediately come into effect. May humanitarian aid be allowed into the civilian population and may all hostages be freed.”
He added: “I was happy to hear on the other hand that there was a ceasefire between India and Pakistan, and I hope that through the coming negotiations we might soon come to a lasting accord.”
His remarks came as Ukrainian President Volodymyr Zelensky and his Russian counterpart Vladimir Putin set out competing plans for a peace process to bring the three-year invasion of Ukraine to an end.
In the Middle East, Israel has cut off all humanitarian aid entering Gaza and resumed its military offensive in the Palestinian territory following the collapse of a two-month ceasefire and hostage exchange agreement.
Meanwhile, India and Pakistan agreed to a tentative ceasefire on Saturday after days of cross-border military strikes that followed an attack on tourists in Indian-administered Kashmir on 22 April.
It has been a busy week for the pontiff, who held his first Mass as Pope in the Sistine chapel on Friday before speaking to cardinals on Saturday.
During this meeting, he described himself as an unworthy choice for Pope, and vowed to continue the “precious legacy” of his predecessor.
He highlighted the importance of missionary work and discussion, as well as care for those he called the “least and the rejected”.
He explained he had chosen the name Leo after a 19th-century Pope known for his teaching on social justice.
The new Pope also suggested the development of artificial intelligence and other advances meant the church was necessary today for the defence of human dignity and justice.