Columbia subject headings:
Irish question.
Northern Ireland--Politics and government--1968-1998.
Northern Ireland--Politics and government--1998-
Ulster Unionist Party.
Unionism (Irish politics)
Harvard subject headings:
Anglo-Irish Agreement
Great Britain--Foreign relations--Ireland.
Ireland--Foreign relations--Great Britain.
Irish question.
Northern Ireland--Politics and government.
Ulster Unionist Party.
Unionism (Irish politics)--History--20th century.
Princeton subject headings: