A couple of new reports by Anthony Cordesman at the Center for Strategic & International Studies (CSIS) might be of particular use with some interesting graphs and charts on various topics.
Pandora's Box: Iraqi Federalism, Separatism, "Hard" Partitioning and US Policy.
http://www.csis.org/media/csis/pubs/071009_pandorasbox.pdf
This working draft report from Oct 9, 2007 looks at federalizing or partitioning Iraq. Useful graphs/charts include topics such as:
refugees and displaced persons, maps of threats and ethno-sectarian violence, Iraqi military and civilian casualties, public opinion, demographics, infrastructure and more.
Political, Military and Economic Dynamics in Iraq: A Graphic Overview.
http://www.csis.org/media/csis/pubs/071005_iraqoverview.pdf
This revised October 2007 report shows, through the use of graphs and maps, topics such as: sectarian & ethnic divisions, oil fields, weekly attack trends by type, high profile and IED attacks, major threats and the state of Al Qaeda, insurgent concentrations, US aid status, crude oil production and more.