Mass international tourism, like the free flow of goods and services, has become a hallmark of globalization. This is neither accidental nor trivial. The ability to travel the world is a function of international cooperation. It is also a force for global understanding at a time of resurgent nationalism.
America’s allies may still have good relations with Washington, despite so much criticism from President Donald Trump. But many U.S. partners, from Europe to East Asia, are not getting along with each other like they did before Trump’s presidency, and some relationships are even at risk of unraveling.