It's not just the multipolarity you have to consider. I actually think that's fairly resolvable for something like loose nukes as basically every stable power has an interest in catch-alls for such things.
But the U.S. the EU and China are all facing internal shifts in thinking about how they relate to the rest of the world. And that's a true wildcard.
Those swings, coupled with multipolarity create a very dynamic system that I think is impossible to predict. When a country may stick its thumb in the eye of international treaty simply because it satisfies a belligerent domestic constituency and that alienates a relatively equal strength power, that's a very volatile situation.
But the U.S. the EU and China are all facing internal shifts in thinking about how they relate to the rest of the world. And that's a true wildcard.
Those swings, coupled with multipolarity create a very dynamic system that I think is impossible to predict. When a country may stick its thumb in the eye of international treaty simply because it satisfies a belligerent domestic constituency and that alienates a relatively equal strength power, that's a very volatile situation.