FILE - In this file photo taken on Thursday, Oct. 22, 2015, Russian air force pilots assisted by ground crew climb into their fighter jet at Hemeimeem airbase, Syria. (AP Photo/Vladimir Isachenkov, File)
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FILE - In this file photo taken on Thursday, Oct. 22, 2015, Russian air force pilots assisted by ground crew climb into their fighter jet at Hemeimeem airbase, Syria. (AP Photo/Vladimir Isachenkov, File)
