Pope Francis wants it—completely, totally, for any purpose, even deterrence (assuming, for now, that this can be done verifiably and verifiably maintained). The Pope thinks an arms race involving nuclear weapons adds to the danger of their existence, never minding the race, at least on the US’ part, is for self-defense and the defense of our friends and allies—the very purpose of NATO stationing nuclear weapons in Europe, for instance.
The Pope, though, avoided addressing how a non-nuclear nation with a small conventional military establishment would defend itself against an aggressively acquisitive non-nuclear nation with a large military establishment. Like, say, the Soviet Union against the nations of Europe, individually or collectively. Or like, perhaps, the People’s Republic of China against the Republic of Korea or Japan—or us.
He appears unconcerned that this might lead to a conventional arms race and conventional military building-up race, a race whose deterrence exists only in the ability to conduct a follow-on mobilization race to the frontier—sort of like what turned out to be the first steps of European wars in the latter half of the 19th century and of two global wars in the first half of the 20th.
Of course, in the case of the PRC, the Pope already has abjectly surrendered control of the Catholic Church and of Catholicism—the Universal Church and universal religion—to the PRC government inside the PRC.
Maybe he expects the rest of us to meekly surrender politically, like he has done religiously.
No, I’m not going to turn the other cheek to conquerors and slavers. Not even St Augustine suggested that, for all that he decried preemption.