Foreign relations -- 3 Biography -- 1 Commerce -- 1 East-West trade 1 Espionage, Soviet -- 1 Foreign relations 1 Guerrilla warfare 1 more ... Nuclear crisis control -- 1 Petroleum industry and trade -- 1 Political prisoners -- 1 Politics and government 1 Secret service -- 1 Sources -- 1 Spies 1 Subversive activities -- 1 less ...