Donald Trump’s plan to allow the European Union pay for arms supplied to Ukraine is piling pressure on EU officials negotiating how to finance the bloc’s defense-spending ambitions.

With a heavy dose of Realpolitik, Germany and other European countries got the U.S. administration to aid Ukraine without directly confronting Putin.

After European leaders stepped up military spending, President Trump aligned himself more closely with them on the war. But his tariff threats have left bruises.