On Wednesday, President Joe Biden is expected to formally announce the planned withdrawal of US troops from Afghanistan by September 11, 2001, which will also mark the end of America’s longest war — a war many no longer remember or understand why we entered.On Wednesday, President Joe Biden is expected to formally announce the planned withdrawal of US troops from Afghanistan by September 11, 2001, which will also mark the end of America’s longest war — a war many no longer remember or understand why we entered.