Forthcoming American Economic Journal: MacroeconomicsWhat Drives the Recent Surge in Inflation? The Historical Decomposition Roller CoasterDrago Bergholt · Fabio Canova · Francesco Furlanetto · Nicolò Maffei-Faccioli · Pål UlvedalThe paper addresses what drove the post-COVID inflation surge in the United States and internationally. Before answering the substantive question, the authors identify and diagnose a methodological …