Viktor Orban’s 16-year grip on Hungary is over, with the prime minister conceding Sunday’s election in a phone call with Peter Magyar, leader of the main opposition Tisza Party. “The election result is painful but clear. I congratulated the winning party,” Orban said from his election headquarters in Budapest. The result is a resounding rebuke to a government marked by authoritarianism and corruption, and by closer ties with Beijing, Moscow and Donald Trump’s Washington over Brussels. Hungarians...