Globalisation has contributed to the well-being of humanity for over half a century. It has helped pull out of extreme poverty hundreds of millions of the very poorest on our planet; it has helped the most wretched of humanity become dignified agents of their own destiny. But how will this change as variants of protectionism and populism now drive political and economic narrative on both sides of the Atlantic? How large and genuinely sustainable are these challenges to globalisation? Is the flame of international exchange and mobility now dead in the West, and what will that do to the rest of the world?