Gen. Stanley McChrystal said that NATO forces have stopped the Taliban's momentum, but no one is winning the war. And as attacks this week on U.S. and NATO forces in Kabul and at Bagram Air Base indicate, there are still tremendous challenges ahead. We look specifically at the offensive in Marjah to see if the U.S. strategy is working.

Lawrence Korb is a senior fellow at the Center for American Progress and was the assistant secretary of defense during the Reagan administration. He says that we are beginning to see the effects of the military presence in Afghanistan, but we don't have a very strong civilian capacity to ensure that the strategy works. David Loyn, BBC correspondent, describes the sense that the war cannot only be won on military terms.