Perhaps historians will look back on the 2020s not only as a period of wars, crises, and geopolitical realignment. Perhaps they will also recognize them as the beginning of a fundamental political shift within the transatlantic world. On both sides of the Atlantic, parties and movements that describe themselves as conservative, national-conservative, or patriotic – or that observers classify as right-wing populist or part of the radical right – have gained political weight. In the United States, Donald Trump has