The European Union’s top diplomat, Kaja Kallas, said on Monday that the bloc has verified reports that China’s military has been “training Russian military personnel to fight in Ukraine”, a development that could deepen tensions between the two sides. Kallas, speaking after chairing a meeting of the EU’s 27 foreign ministers in Luxembourg, said that the EU was “carefully assessing the implications” of the assessment, adding that the ministers had agreed to sanction several Chinese entities...