Columbia subject headings:
Harvard subject headings:
Oligarchy--Russia (Federation)--History.
Putin, Vladimir Vladimirovich, 1952-
Russia (Federation)--Church history
Russia (Federation)--Politics and government--1991-
Secret service--Russia (Federation)--History.
Princeton subject headings:
Putin, Vladimir Vladimirovich, 1952-
Russia (Federation)--Politics and government--1991-