The United States said on Wednesday it would supply Ukraine with 31 of its most advanced battle tanks after Germany broke a taboo with a similar announcement, moves hailed by Kyiv as a potential turning point in its battle to repel Russia's invasion. The U.S. decision to deliver M1 Abrams tanks helped break a diplomatic logjam with Germany over how to best to help Kyiv in its war with Russia, which hours earlier had condemned Berlin's decision to provide Leopard 2 tanks as a dangerous provocation. Washington had been wary of the idea of deploying the difficult-to-maintain Abrams but had...