Nuclear superpowers are among the least likely countries to actually collapse from climate damage.
US isn't Syria, and it's Syria that's at risk.
First world countries like France can absorb a +30% spike to food prices. Countries where the same food price spike would come with a major death toll don't have the tools to kick off WW3.
Not the only reason, no. But their nuclear ambitions certainly did contribute to their current predicament.
Nuclear weapons take time, expertize, resources and sustained political will to develop and deploy. If you have all of that, you might be able to put all of that towards climate adaptation instead. Or: go for the nukes and bet hard that you aren't going to get bombed to shit for it. Worked out for NK, but doesn't seem to have worked for Iran.
I think the level of tolerance US has for marginally stable autocracies with nuclear weapons has receded permanently.
Not to mention that merely having a nuclear bomb doesn't automatically allow one to cause WW3. Nuclear weapons were used in a world war already, and that didn't even destroy a single country - let alone the world. It takes a lot of nukes, and a lot of delivery mechanisms, to actually move the needle on the matter of human civilization existing.
Invade? No. Bomb? Probably. Same if for India if e.g. Sri Lanka decides it wants nuclear weapons.
Global warming will unfortunately disproportionately hit poor, equatorial countries. (Also, starving countries can’t afford a nuclear programme. There is no breakout risk in Sudan.)
And you think a second, much larger Syrian refugee migration will have 0 impact on France?
Nothing happens in a vacuum. Everything and everyone is connected.
