On September 16, General Raymond Odierno will succeed General David Petraeus as commander of U.S. and coalition forces in Iraq. The surge strategy Petraeus and Odierno developed and executed in 2007 achieved its objectives: reducing violence in Iraq enough to allow political processes to restart, economic development to move forward, and reconciliation to begin. Violence has remained at historic lows even after the withdrawal of all surge forces and the handover of many areas to Iraqi control. Accordingly, President Bush has approved the withdrawal of 8,000 additional troops by February 2009.

With Barack Obama's recent declaration that the surge in Iraq has succeeded, it should now be possible to move beyond that debate and squarely address the current situation in Iraq and the future. Reductions in violence permitting political change were the goal of the surge, but they are not the sole measure of success in Iraq.

The United States seeks a free, stable, independent Iraq, with a legitimately elected representative government that can govern and defend its territory, is at peace with its neighbors, and is an ally of the United States in the war on terror. The Iraqi leadership has made important strides toward developing a new and inclusive political system that addresses the concerns of all Iraq's ethnic and sectarian groups. But it has also taken steps in the wrong direction. An understandable desire to seize on the reduction in violence to justify overly hasty force reductions and premature transfer of authority to Iraqis puts the hard-won gains of 2007 and 2008 at risk. Thus, the president's announcement of new troop withdrawals has come before we even know when Iraq's provincial elections will occur.

Reducing our troop strength solely on the basis of trends in violence also misses the critical point that the mission of American forces in Iraq is shifting rapidly from counterinsurgency to peace enforcement. The counter-insurgency fight that characterized 2007 continues mainly in areas of northern Iraq. The ability of organized enemy groups, either Sunni or Shia, to conduct large-scale military or terrorist operations and to threaten the existence of the Iraqi government is gone for now. No area of Iraq today requires the massive, violent, and dangerous military operations that American and Iraqi forces had to conduct over the last 18 months in order to pacify various places or restore them to government control. Although enemy networks and organizations have survived and are regrouping, they will likely need considerable time to rebuild their capabilities to levels that pose more than a local challenge--and intelligent political, economic, military, and police efforts can prevent them from rebuilding at all....