There was the Darlington nuclear plant upgrades recently, which were completed ahead of schedule. Borealis was announced last year indicating new military research development. France had a nuclear sub in one of our ports, they already have nukes. I’m pretty sure they are going for them in secret and may already have one.
Just the threat of a few nukes taking out DC or some other major city is usually enough of a deterrent to not start shit. Yeah, they could litter Canada with ground zero zones, but that’s not the point.
Trump is a different animal though. Most humans care about other people so the threat of a country nuking New York or DC is a pretty good reason to make political arrangements this doesn’t happen. Trump hates humanity and only cares about himself. I honestly think he would be in heaven if a nuke took out LA or Portland.