A U.S. national flag flies at half-staff at the White House commemorating the 20th anniversary of the 9/11 attacks in Washington, D.C., the United States, on Sept. 11, 2021. (Xinhua/Liu Jie)
U.S. marks 20th anniv. of 9/11 attacks
Source: Xinhua| 2021-09-12 07:22:37|Editor: huaxia
ie
