During the 2020 presidential campaign, then-candidate Joe Biden made a promise to end America's longest war, the war in Afghanistan.
He made good on that promise this summer, agreeing to withdraw all American troops from the war-torn country by August 31. In doing so, Biden followed through on an agreement his predecessor Donald Trump signed with the Taliban.
Conservatives -- including Trump -- have nonetheless criticized Biden. The former president's eldest son, Donald Trump Jr., is now joining in the criticism.