The NATO and Lithuanian flags are seen at the summit venue in Vilnius, Lithuania, on Sunday. EPA/FILIP SINGERAs the Russian invasion of Ukraine continues with no end in sight, NATO's much-celebrated unity faces fresh strains when leaders gather for their annual summit this week in Vilnius, Lithuania.The world's biggest security alliance is struggling to reach an agreement on admitting Sweden as its 32nd member. Military spending by member nations lags behind long-standing goals. An inability to compromise over who should serve as NATO's next leader forced an extension of the current secretary-general's term for an extra year.

https://n.news.naver.com/mnews/article/044/0000247960?sid=104

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