Espionage, British History 18 Secret service 13 Spies 9 World War, 1939-1945 7 Intelligence service 4 Military intelligence 4 Underground movements 4 War 4 Diplomatic relations 3 Espionage, American 3 Foreign relations 3 HISTORY 3 HISTORY / Military / World War II 3 Intelligence officers 3 World War, 1914-1918 3 Zionists 3 Electronic surveillance 2 English fiction 2 Espionage 2 General 2 Histoire 2 History and criticism 2 Relations extérieures 2 Spies in literature 2 Spionage 2 Spy stories, English 2 Women spies 2 American fiction 1 Amerikaans 1