This report presents statistics regarding U.S. military casualties in the active Operation Enduring Freedom (OEF, Afghanistan), as well as operations that have ended: Operation New Dawn (OND, Iraq) and Operation Iraqi Freedom (OIF, Iraq). It includes statistics on post-traumatic stress disorder (PTSD), traumatic brain injury (TBI), amputations, evacuations, and the demographics of casualties. Some of these statistics are publicly available at the Department of Defense's (DOD's) website; others have been obtained through contact with experts at the DOD.

Iraq's political transition from the dictatorship of Saddam Hussein to a plural polity that encompasses varying sects and ideological and political factions has been accomplished through a series of elections that began in 2005. However, disputes regarding various communities' claims on power and economic resources has contributed to popular frustration and continued political unrest. This report discusses these issues.

This report discusses executive authority to authorize force in the crisis involving the Islamic State (IS, also known as ISIL or ISIS), which raised significant concerns for the United States.

This report provides a brief history of the development of presidential powers in peacetime. It discusses some of the issues that might be raised in light of the contrast between the executive order's broad language and its narrow aim. It examines the reach of the executive order and provides legal analyses of some of the constitutional questions raised in the courts by similar sanctions programs.

This report discusses Iraq's political system that is increasingly characterized by peaceful competition and formation of cross-sectarian alliances. However, ethnic and sectarian political and sometimes violent infighting continues, often involving the questionable use of key levers of power and legal institutions. This infighting-and the belief that holding political power may mean the difference between life and death for the various political communities-significantly delayed agreement on a new government that was to be selected following the March 7, 2010, national elections for the Council of Representatives (COR, parliament).

This report discusses the situation immediately following the completion of the U.S. withdrawal from Iraq on December 18, 2011, when relations among major political factions worsened substantially, threatening Iraq's stability and the legacy of the U.S. intervention in Iraq. It includes an overview of historical and current political, military, and governance issues as well as an analysis of Iraq in relation to the other nations in the region.

This report discusses Iraq: Politics, Governance, and Human Rights. Relations among major political factions have worsened substantially since late 2011, threatening Iraq's stability and the perception of the achievements of the long U.S. intervention in Iraq. Sunni Arabs, always fearful that Prime Minister Nuri al-Maliki would seek unchallenged power for Shiite factions allied with him, accuse him of an outright power grab as he seeks to purge the highest-ranking Sunni Arabs from government and to cripple attempts by Sunni-inhabited provinces to achieve greater autonomy.