So, in any tragedy of the commons are we just going to accept that the only solutions are going to be to change the concrete circumstances that make it a one?
If not climate change, then there'll be other instances like this where what's good for the individual (country) is bad for the world.
A couple of years ago, this was touted as impossible - "who can impose this global tax you dream of?" was said back then as well. Why should it be impossible for countries to come together like this, with agreements to implement tariffs against countries outside the agreement?
You can require an implementation and oversight of a carbon tax as part of a trade deal.
We’ve literally enforced a thousand different rules on the world as a collective species. Stop pretending this one is different.