Columbia subject headings:
Crimea (Ukraine)--Annexation to Russia (Federation)
Crimea (Ukraine)--History--2014-
Russia (Federation)--Foreign relations--Ukraine.
Russia (Federation)--Foreign relations--Western countries.
Ukraine--Foreign relations--Russia (Federation)
Western countries--Foreign relations--Russia (Federation)
Harvard subject headings:
Crimea (Ukraine)--History, Military--21st century.
Crimea (Ukraine)--History--21st century.
Economic development--Ukraine--Crimea--History--21st century.
Infrastructure (Economics)--Ukraine--Crimea--History--21st century.
North Atlantic Treaty Organization
Princeton subject headings:
Crimea (Ukraine)--Annexation to Russia (Federation)
Crimea (Ukraine)--History--2014-
Russia (Federation)--Foreign relations--Ukraine.
Russia (Federation)--Foreign relations--Western countries.
Ukraine--Foreign relations--Russia (Federation).
Western countries--Foreign relations--Russia (Federation).