Politics and government History 100 Bulgarian Primary Sources 22 Foreign relations 22 Intelligence Reports 17 Statesmen 17 Communism 16 more ... Intelligence service 12 Politicians 12 Bulgarians 10 Law 8 Relations 8 Economic conditions 7 Political parties 7 Post-communism 7 Economic policy 6 Ethnic relations 6 Biography 5 Church and state 5 Constitutional history 5 Eastern question (Balkan) 5 Political persecution 5 Politique et gouvernement 5 Socialism 5 Autonomy and independence movements 4 Communists 4 Internal security 4 Nationalism 4 Social conditions 4 Turks 4 less ...