With the formal ending of the U.S. war in Iraq on December 15, 2011, the Congressional Research Service has produced an updated report on U.S. Periods of War and Dates of Current Conflicts (pdf).
“Confusion can occur because beginning and ending dates for ‘periods of war’ in many nonofficial sources are often different from those given in treaties and other official sources of information, and armistice dates can be confused with termination dates,” the December 28, 2011 CRS report said.
A different kind of confusion can arise when misleading or mistaken information is presented as fact, as when President Bush declared in a May 1, 2003 address to the nation that “major military combat actions in Iraq have ended.”
The CRS report does not address covert action or other unacknowledged military operations.
Some other noteworthy new or newly updated reports from the Congressional Research Service include the following (all pdf).
The National Security Council: An Organizational Assessment, December 28, 2011
National Infrastructure Bank: Overview and Current Legislation, December 14, 2011
Keystone XL Pipeline Project: Key Issues, December 12, 2011
Recess Appointments: Frequently Asked Questions, December 12, 2011
“Super PACs” in Federal Elections: Overview and Issues for Congress, December 2, 2011