Turkish President Recep Tayyip Erdogan participates in a round table meeting during a NATO leaders meeting at The Grove hotel and resort in Watford, Hertfordshire, England, Wednesday, Dec. 4, 2019. As NATO leaders meet and show that the world's biggest security alliance is adapting to modern threats, NATO Secretary-General Jens Stoltenberg is refusing to concede that the future of the 29-member alliance is under a cloud. (AP Photo/Evan Vucci)
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