Columbia subject headings:
Harvard subject headings:
Putin, Vladimir Vladimirovich, 1952-
Russia (Federation)--Foreign relations--United States.
Russia (Federation)--Politics and government--1991-
United States--Foreign relations--Russia (Federation)
Princeton subject headings:
Putin, Vladimir Vladimirovich, 1952-
Russia (Federation)--Foreign relations.
Russia (Federation)--Relations--United States.
United States--Foreign relations--Russia (Federation)
World politics--21st century.