Pope Francis announced this week that “the use of nuclear weapons is immoral, which is why it must be added to the Catechism of the Catholic Church.”

Two years after the Vatican State signed the Treaty on the Prohibition of Nuclear Weapons (currently ratified by 34 countries), he declared during an in-flight press briefing from Japan to Rome, “Not only their use, but also possessing them: because an accident or the madness of some government leader, one person’s madness can destroy humanity.”

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