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People take photos in front of a large radar dish on NATO Day in Bydgoszcz, Poland, on Oct. 14, 2017. NATO has a training center in the city and offers the public opportunities to visit on the open day. (Xinhua/Jaap Arriens)
People take photos in front of a large radar dish on NATO Day in Bydgoszcz, Poland, on Oct. 14, 2017. NATO has a training center in the city and offers the public opportunities to visit on the open day. (Xinhua/Jaap Arriens)