Aria Rahmati wears the sapphire ring given to her by the man she loved, an Afghan special forces soldier, before she fled Afghanistan, in Leesburg, Va., Dec. 1, 2021. The items that tens of thousands of Afghans chose during the frantic dash to get out of their country last summer now constitute the only tangible ties to the world they left behind. (Meridith Kohut/The New York Times)