Columbia subject headings:
Iraq War, 2003-2011--Causes.
Iraq--History--1991-2003.
Iraq--History--2003-
Harvard subject headings:
Iraq War, 2003-2011--Causes
Iraq--History--1991-2003.
Iraq--History--2003-
Princeton subject headings:
Iraq War, 2003-2011--Causes.
Iraq--History--1991-2003.
Iraq--History--2003-