Germany’s announcement on Saturday that it will send Ukraine another $2.9 billion worth of weapons—as much as it has previously sent in the 15 months since Russia’s invasion—is being hailed as the clearest sign yet of Berlin’s all-in support for Kyiv’s war effort. Over the same weekend, Ukrainian President Volodymyr Zelensky flew to Italy, France, and Britain, as well as Germany, where more arms and unflagging support were pledged from all parties. Even Italian Prime Minister Giorgia Meloni—who ran for office last fall as a populist friendly to Russian President Vladimir Putin—declared, “We bet on the victory of Ukraine.” Advertisement...