American detainees
Americans detained abroad
Cheeseburger
detained Americans
former U.S. Marine
hostage advocacy
humanitarian release
Prisoner exchange
Prisoner release
Robert Gilman
Russia detention
russian prison
U.S.-Russia relations
Vladimir Gilman
wrongful detention
Fmr U.S. marine released from Russian prison
Former U.S. Marine Robert Gilman has been released after more than four years in a Russian prison and is on…