Columbia subject headings:
Putin, Vladimir Vladimirovich, 1952-
Russia (Federation)--Foreign relations--United States.
United States--Foreign relations--Russia (Federation)
Harvard subject headings:
Putin, Vladimir Vladimirovich, 1952-
Russia (Federation)--Foreign relations--United States.
United States--Foreign relations--Russia (Federation)
Princeton subject headings:
Putin, Vladimir Vladimirovich, 1952-
Russia (Federation)--Foreign relations--United States.
United States--Foreign relations--Russia (Federation)