FILE - In this Wednesday, July 13, 2016 file photo, NATO Secretary General Jens Stoltenberg speaks during a news conference at NATO headquarters in Brussels, Belgium. NATO’s secretary-general says his bid to become the alliance’s chief was supported by U.S. President Barack Obama, who worked behind the scenes to make it happen. In an autobiography published Friday, Sept. 30 titled "My Story,” former Norwegian prime minister Jens Stoltenberg wrote that Obama sent him a letter in late 2013 after Stoltenberg had resigned because his Labor Party had lost a parliamentary election. (AP Photo/Darko Vojinovic, file)