U.S. National Security Adviser Jake Sullivan (2nd R) attends a press briefing at the White House in Washington, D.C., the United States, on Aug. 17, 2021. The Taliban told the United States that they would provide safe passage of civilians to Kabul airport, Sullivan said on Tuesday. (Photo by Ting Shen/Xinhua)

U.S. National Security Adviser Jake Sullivan (Rear) attends a press briefing at the White House in Washington, D.C., the United States, on Aug. 17, 2021. The Taliban told the United States that they would provide safe passage of civilians to Kabul airport, Sullivan said on Tuesday. (Photo by Ting Shen/Xinhua)

U.S. National Security Adviser Jake Sullivan addresses a press briefing at the White House in Washington, D.C., the United States, on Aug. 17, 2021. The Taliban told the United States that they would provide safe passage of civilians to Kabul airport, Sullivan said on Tuesday. (Photo by Ting Shen/Xinhua)

U.S. National Security Adviser Jake Sullivan addresses a press briefing at the White House in Washington, D.C., the United States, on Aug. 17, 2021. The Taliban told the United States that they would provide safe passage of civilians to Kabul airport, Sullivan said on Tuesday. (Photo by Ting Shen/Xinhua)

U.S. National Security Adviser Jake Sullivan (1st R) attends a press briefing at the White House in Washington, D.C., the United States, on Aug. 17, 2021. The Taliban told the United States that they would provide safe passage of civilians to Kabul airport, Sullivan said on Tuesday. (Photo by Ting Shen/Xinhua)

U.S. National Security Adviser Jake Sullivan (Rear) attends a press briefing at the White House in Washington, D.C., the United States, on Aug. 17, 2021. The Taliban told the United States that they would provide safe passage of civilians to Kabul airport, Sullivan said on Tuesday. (Photo by Ting Shen/Xinhua)

U.S. National Security Adviser Jake Sullivan addresses a press briefing at the White House in Washington, D.C., the United States, on Aug. 17, 2021. The Taliban told the United States that they would provide safe passage of civilians to Kabul airport, Sullivan said on Tuesday. (Photo by Ting Shen/Xinhua)

U.S. National Security Adviser Jake Sullivan (Rear) attends a press briefing at the White House in Washington, D.C., the United States, on Aug. 17, 2021. The Taliban told the United States that they would provide safe passage of civilians to Kabul airport, Sullivan said on Tuesday. (Photo by Ting Shen/Xinhua)

U.S. National Security Adviser Jake Sullivan (Rear) addresses a press briefing at the White House in Washington, D.C., the United States, on Aug. 17, 2021. The Taliban told the United States that they would provide safe passage of civilians to Kabul airport, Sullivan said on Tuesday. (Photo by Ting Shen/Xinhua)

U.S. National Security Adviser Jake Sullivan (Rear) addresses a press briefing at the White House in Washington, D.C., the United States, on Aug. 17, 2021. The Taliban told the United States that they would provide safe passage of civilians to Kabul airport, Sullivan said on Tuesday. (Photo by Ting Shen/Xinhua)