Klaus Welle served as secretary general of the European Parliament from 2009 to 2022 and is now chair of the Academic Council at the Brussels-based think tank the Wilfried Martens Centre for European Studies. Welle made a splash last month criticizing the Trump administration’s reversal in U.S. support for Ukraine and U.S. tariffs on the EU for boosting Beijing and Moscow’s efforts to split the transatlantic alliance.