Ksenia Karelina, a dual U.S.-Russian national previously imprisoned in Russia on treason charges, has been released and is returning to the United States, as announced by U.S. Secretary of State Marco Rubio. Her release, reportedly part of a prisoner swap between the U.S. and Russia, underscores ongoing diplomatic negotiations concerning individuals detained on espionage or treason charges. Karelina's case highlights the complexities of international legal and diplomatic proceedings, particularly for dual nationals caught in geopolitical tensions.