NUMBER GAMESWhat do you get when you put these two stories together?http://www.nytimes.com/2007/09/07/washington/07policy.htmlGen. David H. Petraeus, the top American commander in Iraq, has told President Bush that he wants to maintain heightened troop levels in Iraq well into next year to reduce the risk of military setbacks, but could accept the pullback of roughly 4,000 troops beginning in