Sure, but I think it'll be very difficult to get the US, China, and Russia to agree on something as drastic as this before catastrophic climate-related events s

Sure, but I think it'll be very difficult to get the US, China, and Russia to agree on something as drastic as this before catastrophic climate-related events start taking place. (And let's not forget all the other nations with nuclear missiles. The playing field is a lot more level these days, for better or worse.)