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As Trump hammers NATO allies on defense spending, military planners worry about his ‘2 percent’ obsession  Washington PostTrump blasts NATO ahead of European visit, accuses allies of shortchanging US  NBCNews.comTusk’s EU riposte to Trump: Respect the allies you have  ReutersThe Latest: Trump Says Putin Meeting May Be ‘Easiest’  U.S. News & World ReportFull coverage |