... Wait, which are these _non_-chaotic nuclear armed countries? Like, US: Jan 6th and all that. Russia: At least one major military coup in the last year. Britain: Brexit, new prime minister every three weeks, all infrastructure more or less at point of collapse. France: well, 'nuff said.

You could maybe argue China, I suppose? Though I think they're just better at keeping the chaos boiling just below the surface.