Over the last two years, the US government has started thinking about the future of the world in a very different way. Across speeches and policy papers, a vision of world politics has emerged which breaks sharply both with the old logic of the Cold War and the newer politics of globalization. The globalization bet has turned sour, but it has created a far more closely connected world than ever existed before. Problems such as climate change, economic inequality, food security, supply chain vulnerabilities, democratic weakness and mass migration emerge from the interdependent choices of people and governments in a global system without any global rulers. In a complex interdependent world, is the only way forward to accept these complexities, and try to work with them? That is the challenge that the US now faces – moving from the simple imagined futures of the past to a more entangled and realistic vision of our planet's future.