Eston Kohver

Eston Kohver (born 1971) is an Estonian officer of the Estonian Internal Security Service who was detained by the Russian FSB on 5 September 2014 under disputed circumstances, creating a major political rift in Estonia–Russia relations. In Russia, Kohver was convicted of espionage and sentenced to 15 years in prison, but in September 2015 was returned to Estonia in a prisoner exchange.