(FILES) In this file photo US Marines board a C-130J Super Hercules transport aircraft headed to Kandahar as British and US forces withdraw from the Camp Bastion-Leatherneck complex at Lashkar Gah in Helmand province on October 27, 2014. - US President Joe Biden will formally announce on April 14, 2021 the withdrawal of all US troops from Afghanistan before this year's 20th anniversary of the September 11 attacks, finally ending America's longest war despite mounting fears of a Taliban victory, officials said. The drawdown delays only by around five months an agreement with the Taliban by former president Donald Trump to pull troops, amid a growing consensus in Washington that little more can be achieved. (Photo by Wakil KOHSAR / AFP)