Columbia subject headings:
Afghanistan--Foreign relations--United States.
Iraq--Foreign relations--United States.
United States--Foreign relations--Afghanistan.
United States--Foreign relations--Iraq.
War on Terrorism, 2001-2009.
Harvard subject headings:
Afghan War, 2001-2021
Afghanistan--Foreign relations--United States.
Iraq War, 2003-2011
Iraq--Foreign relations--United States.
United States--Foreign relations--2001-2009.
United States--Foreign relations--Afghanistan.
United States--Foreign relations--Iraq.
War on Terrorism, 2001-2009
Princeton subject headings:
Afghan War, 2001-2021.
Iraq War, 2003-2011.
United States--Foreign relations--2001-2009.
War on Terrorism, 2001-2009.