In this Thursday, Feb. 18, 2021, file photo, NATO Secretary-General Jens Stoltenberg wears a protective face mask as he prepares to speak during a media conference at NATO headquarters in Brussels. Stoltenberg on Tuesday, Aug. 17, 2021, blamed a failure of Afghan leadership for the swift collapse of the country's Western-backed armed forces, but he conceded that the alliance must also address flaws in its military training program. (AP Photo/Virginia Mayo, Pool, File)
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