China will. They're an importer of energy and they're suffering from air pollution. They show no ideological opposition to reducing CO2. Russia won't, but they

China will. They're an importer of energy and they're suffering from air pollution. They show no ideological opposition to reducing CO2. Russia won't, but they're a smaller country and the impact isn't as big. Also, legislation isn't a thing on a world level. You have treaties and agreements. And if that doesn't work, you impose a carbon tarriff. There won't be a need for war.