A tent stands ready to welcome the heads of the 28 NATO members and other officials for a NATO summit at the National Stadium in Warsaw, Poland, Thursday, July 7, 2016. The Polish capital Warsaw will host a two-day NATO summit starting Friday, July 8, the first time ever that it hosts a top-level meeting of the Western military alliance which it joined in 1999. (AP Photo/Czarek Sokolowski)
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