Riding in a motorcade in Lima, Peru, shortly after the 2016 election, President Barack Obama was struggling to understand Donald J. Trump’s victory. “What if we were wrong?” he asked aides riding with him in the armored presidential limousine. He had read a column asserting that liberals had forgotten how important identity was to people and had promoted an empty cosmopolitan globalism that made many feel left behind. “Maybe we pushed too far,” Mr. Obama said. “Maybe people just want to fall back into their tribe.” SNIP--- Mr. Rhodes describes the reaction of foreign leaders. Prime Minister Shinzo Abe of...