Petraeus Assumes Command of Coalition Forces in Afghanistan

As Gen. David Petraeus arrived in Kabul today to take control of the long Afghanistan war, a pre-dawn attack on an American aid organization and dramatic video from the front lines underscored the difficult job that lies ahead. Petraeus arrived in Kabul late on Friday, conducting an intentionally low-key arrival with little fanfare following the dramatic ouster of Gen. Stanley McChrystal in June. Watch "World News" tonight on ABC for Martha Raddatz' reporting from Afghanistan. Traveling with...Full Story