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Pope Leo criticises nuclear deterrence on 80th anniversary of Hiroshima bombing

Published by Global Banking & Finance Review

Posted on August 6, 2025

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· Last updated: January 22, 2026

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Pope Leo criticises nuclear deterrence on 80th anniversary of Hiroshima bombing
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By Joshua McElwee VATICAN CITY (Reuters) -Pope Leo on Wednesday criticised the "illusory security" of the global nuclear deterrence system, in an appeal on the 80th anniversary of the United States

Pope Leo Denounces Nuclear Deterrence on Hiroshima Anniversary

Pope Leo's Stance on Nuclear Deterrence

By Joshua McElwee

Historical Context of Nuclear Deterrence

VATICAN CITY (Reuters) -Pope Leo on Wednesday criticised the "illusory security" of the global nuclear deterrence system, in an appeal on the 80th anniversary of the United States dropping an atomic bomb on the Japanese city of Hiroshima at the end of the Second World War.

The Role of the Catholic Church

Leo, the first U.S.-born pope, said in his weekly audience that the destruction in Hiroshima, which killed about 78,000 people instantly, should serve "as a universal warning against the devastation caused ... by nuclear weapons."

Global Reactions and Statements

"I hope that in the contemporary world, marked by strong tensions and bloody conflicts, the illusory security based on the threat of mutual destruction will give way to ... the practice of dialogue," said the pontiff.

While the Catholic Church for decades gave tacit acceptance to the system of nuclear deterrence that developed in the Cold War, Leo's predecessor Pope Francis changed the Church's teaching to condemn the possession of nuclear arms.

Francis, who died in April after a 12-year papacy, also strongly backed the U.N. treaty to ban nuclear weapons, which formally went into force in 2021 but has not gained support from any of the nuclear-armed nations.

Leo's appeal on Wednesday came hours after representatives from 120 countries, including the U.S., attended an annual ceremony in Hiroshima to mark the atomic bombing.

Among those attending the ceremony was a delegation of Catholic bishops from Japan, South Korea and the U.S. including Cardinals Blase Cupich of Chicago and Robert McElroy of Washington, D.C.

"We strongly condemn all wars and conflicts, the use and possession of nuclear weapons and the threat to use nuclear weapons," the bishops said in a joint statement on Wednesday.

(Reporting by Joshua McElwee, Editing by Alvise Armellini.)

Key Takeaways

  • Pope Leo criticizes nuclear deterrence as 'illusory security'.
  • Hiroshima bombing serves as a warning against nuclear devastation.
  • Pope Francis condemned nuclear arms possession during his papacy.
  • 120 countries attended Hiroshima ceremony, including U.S. representatives.
  • Catholic bishops jointly condemn nuclear weapons and wars.

Frequently Asked Questions

What is nuclear deterrence?
Nuclear deterrence is a military strategy aimed at preventing an adversary from taking an action by the threat of retaliatory nuclear attack.
What is the role of the Catholic Church in global security?
The Catholic Church plays a role in promoting peace and dialogue among nations, advocating for disarmament, and addressing moral implications of warfare.
What is the significance of the Hiroshima bombing?
The Hiroshima bombing, which occurred on August 6, 1945, marked a pivotal moment in World War II, resulting in massive destruction and loss of life, and it serves as a reminder of the devastating effects of nuclear weapons.

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