The Defense Department is moving to close an array of bases and installations in Europe in an effort that would save $500 million annually and have zero impact on U.S. warfighting capabilities as it prepares to bolster its presence in Eastern Europe to address new military threats from a revanchist Russia, according to two top Pentagon officials. Derek Chollet, the assistant secretary of defense for international security affairs, told reporters at the Pentagon on Thursday that DOD will continue to...