Dmitry Gordievsky - Wikipedia

Metro 2: Most Up-to-Date Encyclopedia, News & Reviews

Espionage/Intelligence, Coldspur

The Soviet Side of the 1983 War Scare

Andrey Lugovoy - Wikiwand

Wikidata:WikiProject Chess/Lists/GM/2017 - Wikidata

KGB officers: Vladimir Putin, Kim Philby, Alexander Litvinenko, Sergei Kourdakov, Igor Panarin, Heydar Aliyev, Sergei Ivanov, Anatoliy Golitsyn

File:TataSteelChess2018-23.jpg - Wikimedia Commons

Foreign Policy Centre, Author at The Foreign Policy Centre - Page 4 of 20

Geography

The chess games of Dmitry Kokarev

Metro 2: Most Up-to-Date Encyclopedia, News & Reviews