Politics and government -- Foreign relations -- 15 Perestroika 10 Biography -- 8 Heads of state -- 6 Nationalism -- 6 Social conditions -- 6 more ... Glasnost 5 Ethnic relations 4 History -- 4 Politics and government 4 Congresses -- 3 Economic conditions -- 3 Relations -- 3 Communism -- 2 Economic policy -- 2 Elite (Social sciences) -- 2 History 2 Minorities -- 2 World politics -- 2 Armed Foeces -- 1 Autonomy and independence movements 1 Baltic States -- 1 Civil society -- 1 Civilization, Modern -- 1 Communism and science -- 1 Communists -- 1 Congresses 1 Constitutional history 1 Democracy -- 1 less ...