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Photo taken on Aug. 30, 2021 shows Wazir Akbar Khan hospital in Kabul, capital of Afghanistan. After the deadly suicide blast which killed some 170 Afghan people and 13 U.S. soldiers at the Kabul airport on Thursday, some survivors have raised the possibility that a number of Afghan people were actually killed by American fire amid the chaos and confusion instead of by bombing. (Photo by Saifurahman Safi/Xinhua)