Columbia subject headings:
History, Modern--20th century.
Military history, Modern--20th century.
War--History--20th century.
World politics--20th century.
Harvard subject headings:
Iraq War, 2003-2011.
War (Philosophy)
War--History--20th century
World politics--20th century
World politics--21st century
Princeton subject headings:
Iraq War, 2003-2011.
War (Philosophy)
War--History--20th century.
World politics--20th century.
World politics--21st century.