Columbia subject headings:
Balkan Peninsula--Foreign relations--Great Britain.
Eastern question (Balkan)
Great Britain--Foreign relations--Balkan Peninsula.
Great Britain--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--Great Britain.
Harvard subject headings:
Balkan Peninsula--Foreign relations--Great Britain.
Eastern question (Balkan)
Great Britain--Foreign relations--Balkan Peninsula.
Great Britain--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--Great Britain.
Princeton subject headings:
Balkan Peninsula--Foreign relations--Great Britain.
Eastern question (Balkan)
Great Britain--Foreign relations--Balkan Peninsula.
Great Britain--Foreign relations--Russia.
Russia--Foreign relations--Great Britain.