Realistically, through something like strong(er) accords and negotiation. But the first step is understanding the problem, recognizing it, and declaring an inte

Realistically, through something like strong(er) accords and negotiation. But the first step is understanding the problem, recognizing it, and declaring an intent to address it with international cooperation. Saying "but my neighbor won't help" doesn't seem effective to get anything done. The mixed signals regarding thew science also don't help. One of the principles of negotiation is showing goodwill, so let's all just start by doing our part, and then the international community can have a strong negotiating position with defectors. Being a defector ourselves doesn't help! (I prefer to suffer while striving for a good, than suffer slightly less knowing I'm part of the problem)