Afghanistan has other enormous challenges as well, including a political system that is still very much developing, although there has been some progress in the past several years.
David PetraeusUS forces have been increased [in Afghanistan ] from some 21,000 to about 31,000 over the past two years and a number of coalition countries have also increased their forces, there still are not sufficient troops.
David PetraeusThe fact is that Iran doesn't want to see the Taliban come back any more than do most Afghan citizens.
David PetraeusThere [in Afghanistan] is also a growing insurgency threat from al-Qaida, the Taliban and other extremist elements, some of which comes from the tribal areas of Pakistan, as well as from the Northwest Frontier province and Baluchistan.
David Petraeus