President Donald Trump might be in a political hole, but his brand of conservative populist nationalism is flourishing across the globe. Rising star Flávio Bolsonaro’s shock win in the first round of Brazil’s presidential election Sunday bolstered Trump’s project of remaking the Western Hemisphere in his political image. Populist right-wingers are also on the march in Europe, fueled by the same failures of foreign leaders to tackle the cost of living and deliver promised change that are haunting US Republicans as the midterm elections draw near. The radical anti-immigration Alternative for Germany (AfD) is catapulting into a national force as...