In this, climate change activists could take a page from nuclear disarmament activists’ playbook. They should stop treating climate change as an economic problem that can be solved through carbon trading, or an environmental issue that requires collective action by the worst offenders on behalf of the planet. Instead, eliminating carbon emissions must be seen as a moral and humanitarian imperative requiring decisive action regardless of whether the United States and China agree. To do so, they will need to build a strong set of global norms prohibiting carbon emissions.