RAND Counterinsurgency Study, Volume 2, Counterinsurgency in Iraq (2003–2006), by Bruce R. Pirnie and Edward O’ Connell.

“The difficulties encountered by the United States in securing Iraq and Afghanistan despite years of effort and staggering costs raises the central question of the RAND Counterinsurgency Study: How should the United States improve its capabilities to counter insurgencies, particularly those that are heavily influenced by transnational terrorist movements and thus linked to a global jihadist network? This second volume in the series offers recommendations for future counterinsurgency operations, based on the U.S. experience in Iraq.