US marks 20 years since 9/11, in shadow of Afghan war's end
6:37am PDT - September 11th, 2021 twin towers - The Times of IndiaPresident Joe Biden, former presidents Barack Obama and Bill Clinton joined a crowd of victims' relatives and first responders at the Sept. 11 memorial plaza in New York. The memorial stands where the the World Trade Center's twin towers were rammed and felle…