Russia and Ukraine have engaged in their largest prisoner swap since Russia's full-scale invasion started over three years ...

Ksenia Karelina, a U.S.-Russian dual national who was detained last year on treason charges, was released from Russia in the latest prisoner exchange, according to the State Department.

Karelina was serving a 12-year prison sentence for treason. LONDON -- U.S.-Russian dual citizen Ksenia Karelina landed in the United States Thursday evening, after being released from a Russian ...