Columbia subject headings:
Crimea (Ukraine)--Annexation to Russia (Federation)
Crimea (Ukraine)--History--2014-
Donets Basin (Ukraine and Russia)--History--Autonomy and independence movements.
Russia (Federation)--Foreign relations--Ukraine--21st century.
Ukraine Conflict, 2014-
Ukraine--Foreign relations--Russia (Federation)--21st century.
Harvard subject headings:
Crimea (Ukraine)--Annexation to Russia (Federation)
Russia (Federation)--Armed Forces--Ukraine--Donet͡sʹka oblastʹ.
Russia (Federation)--Armed Forces--Ukraine--Luhansʹka oblastʹ.
Ukraine Conflict, 2014---Economic aspects--Ukraine.
Ukraine Conflict, 2014---Social aspects--Ukraine.
World politics--21st century
Princeton subject headings:
Crimea (Ukraine)--Annexation to Russia (Federation)
Crimea (Ukraine)--History--2014-
Donets Basin (Ukraine and Russia)--History--Autonomy and independence movements.
Russia (Federation)--Foreign relations--Ukraine--21st century.
Ukraine Conflict, 2014-
Ukraine--Foreign relations--Russia (Federation)--21st century.