Introduction: Trump, nationalism, and a future in the balance -- Trade past and present (a quick primer) -- The U.S. time bomb that blew up in 2016 -- Broader problems with trade--what's behind anti-globalism -- Is the world trade order broken? -- Can welfare states survive in the global economy? -- Potential trade scenarios -- The huge (but hard to quantify) social benefits of trade -- How mature industrial nations should forge the new multilateralism -- Conclusion: a vision for sustainable global growth through trade