On November 24, at the southeastern frontier of the European Union and NATO, Romanian voters delivered an unexpected victory to a rightwing populist named Călin Georgescu in the opening round of the country’s presidential election. Always considered a longshot, Georgescu had been polling in the single digits just weeks before surging to claim first place with 23 percent of the vote. The result shocked Romania’s two dominant parties, who found themselves on the sidelines as Georgescu campaigned for the runoff against another anti-establishment candidate who came in second place, Elena Lasconi of the reformist Save Romania party.Then, on December 4,...