‘America first does not mean America alone,” President Trump declared last month at the World Economic Forum in Davos, Switzerland. This sudden burst of pragmatism from an avowed nationalist showed what a difference a year can make. Denouncing the “false song of globalism” during his presidential campaign, Trump, on his third full day in office, canceled the Trans-Pacific Partnership, a regional trade deal with Japan and 10 other countries. He then denounced Canada, Germany and South Korea for exporting more to the United States than they import. He promised to renegotiate trade pacts with Europe, Canada and Mexico and get a better deal for American workers. In Davos, however, he reached out with conciliatory words to the very free-trading and globalizing elites he has consistently maligned.