This is a very specific concern. I would rephrase it, slightly. Will a world made up of nation states do better at getting us off the planet than a world of ci

This is a very specific concern. I would rephrase it, slightly. Will a world made up of nation states do better at getting us off the planet than a world of city states, or one that includes them. It's hard to say much about a world divided up completely differently, but I do think a higher resolution political world is likely to aggregate efforts a lot more.