A Trump supporters before Trump's speech at Liberty University in Lynchburg, Virginia, January 2016.
Joshua Roberts / Reuters

Last week in Foreign AffairsRichard Fontaine and Robert D. Kaplan analyzed the impact of this year’s campaign populism on U.S. foreign policy. Domestic economic difficulties, they argued, have made Americans less willing to have their country play a large role abroad. Even if neither Donald Trump nor Bernie Sanders ends up as president, future policymakers will have to heed the strong sentiments these candidates have tapped.

At first glance, the data confirm this view. A Pew Research Center report published May 5 found that 65 percent of Republicans and 73 percent of Democrats want the next president to focus on domestic rather than foreign affairs. Almost two-thirds of Trump supporters—and a narrow majority of Sanders backers—agreed that the United States has suffered from its involvement in the global economy. And 61 percent of Americans (as well as 71 percent of Republicans) agreed that the United States has lost the international

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  • Stephen Sestanovich is the George F. Kennan senior fellow for Russian and Eurasian studies at the Council on Foreign Relations and the Kathryn and Shelby Cullom Davis professor of international diplomacy at Columbia University's School of International and Public Affairs.
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