A look at Democratic plans on Iraq

Highlights of separate measures on the Iraq war that House and Senate Democratic leaders released Thursday:

House Democratic leaders proposed adding language to President Bush's request for nearly $100 billion for military and diplomatic efforts in Iraq and Afghanistan that:

_Requires that all combat troops begin leaving Iraq in March 2008 and are gone by that September. Would allow personnel conducting training and diplomatic missions to stay.

_May require that troops come home sooner than September 2008 if the Iraqi government does not meet certain benchmarks for easing violence and political divisions in the country. These benchmarks include a political agreement on how to share the nation's oil revenues and amending the constitution, seen as unfair to minority Sunnis.

_Requires the president to certify on July 1 that Iraq is making progress and on Oct. 1 that the benchmarks have been completed. As soon as the president cannot guarantee conditions are being met, troops must come home in six months.

_Adds $4 billion to Bush's request for military spending, including $1 billion extra to ramp up efforts in Afghanistan and $900 million to help troops recovering from brain injuries and post-traumatic stress syndrome.

_Prohibits military action against Iran unless authorized by Congress.

Senate Democrats proposed legislation separate from the measure financing the wars that:

_Requires the president to change the mission of U.S. forces to protecting U.S. personnel and infrastructure, training and equipping Iraqi forces, and carrying out counterterrorism operations.

_Mandates troop withdrawals to begin within 120 days of enactment, with the goal of removing most combat forces by March 31, 2008, except those required to carry out the newly defined mission.

_Requires regular reports from the president to Congress on progress being made on shifting the mission and redeploying troops.