Question Of The Day: What Happens If Obama Doesn't Send More Troops?

If President Obama doesn't approve at least most of the 40,000 additional troops Gen. Stanley McChrystal has requested for the war in Afghanistan, will will be the consequences
     -for McChrystal's tenure as top commander in Afghanistan?
     -for Obama's public support and political capital?
     -for the 2010 midterms?
     -for the people of Afghanistan, troop commitments from U.S. allies, and the broader war effort?