Who is Paul Whelan, the former U.S. Marine held in Russia?

The release of Brittney Griner, the American basketball star imprisoned in Russia who was exchanged Thursday for Russian arms dealer Viktor Bout, shed light on the case of another American prisoner, Paul Whelan.

U.S. officials say they are still working to secure the release of the former Marine, who was arrested in Moscow in 2018, but claim he was not part of the negotiations for Thursday’s prisoner swap because his case is being treated differently by the Russians.