The new nuclear race is alas a bunch of countries scrambling to develop nuclear weapons now that the USA has loudly declared fuck you Europe, and is trying to cozy up to & start making business deals with Russia.
These countries now need to arm themselves with nuclear weapons, now that America has promptly fled the world stage.
Heh, the fusion race is interesting, but I think with recent events, there's a reasonable chance that the non-proliferation regime is going to completely snap within the next few years.
A whole lot of countries will either openly join the nuclear weapons club, or enter a Israeli like state of nuclear ambiguity, or openly "leak" rumors of nuclear latency.