When French President Emmanuel Macron appointed Jean-Noël Barrot last September as his new Minister for Europe and Foreign Affairs—the fourth during eight years in power—some feared the 42-year-old economist might be totally eclipsed by the country’s kinetic leader. Indeed, Macron has zipped furiously across Europe, the Middle East, and Asia all year, negotiating deals on climate, trade, military assistance, and peace, some of it in an effort to fill an aching vacuum left by Washington. For all