http://news.yahoo.com/s/csm/20071224...7KA8dHkLoDW7oF

Washington - The strain of the war in Iraq is increasingly forcing senior Pentagon leaders to be blunter about the military's inability to sustain war operations indefinitely, a shift in tone that may mean more troops come home sooner.

The change comes as the security situation in Iraq looks much improved over even six months ago. It also comes under the leadership of Defense Secretary Robert Gates, who has welcomed candor from his commanders. As a result, senior leaders have taken advantage of the situation to make a more public case that the military, especially the Army, can no longer afford the luxury of sustained military operations in Iraq.

The Pentagon is already taking steps to draw down forces. Currently, there are about 165,000 American troops in Iraq, which includes about 20 combat brigades. By next summer, the plan is to return five combat brigades, or about 20,000 troops.