Furthermore, Donald Trump,
Vladimir Putin, Boris Johnson, Xi Jinping and other world leaders have promised to
decommission their nuclear weapons as soon as possible.
The Death Star - unlikely to make it into the catechism.
Said Boris, "Crikey! It's a good job that we're still allowed to use laser death rays, 'Satan bug' killer viruses, deadly nerve gas, and cyanide in the water supply. Otherwise those Russian and Chinese chappies would be all over us!"
It is not clear exactly what the wording of the catechism will be. Possibly the change will be preceded by an apostolic exhortation Armorum Laetitia - the joy of weapons - in which an obscure footnote will explain that those living in sin with nuclear weapons will still be admitted to communion after a process of accompaniment.
A new threat to mankind?
Meanwhile, the Pope is now turning his attention to Giant Killer Bees, which are already banned by the Geneva convention. It would be unthinkable to proscribe nuclear weapons in the catechism, while still allowing such deadly creatures to wipe out the free world (or even the non-free world, for that matter).
Pope Francis of course has no need of weapons of mass destruction. When he took over the Sovereign Order of Malta, it was a bloodless coup, and although Fra' Matthew Festing, in retirement, checks his bed every night for giant spiders, he has so far found none.
Beware the giant killer spidero!