From the Haqqani network to the Afghan Taliban, a look at a splintered enemy.
By Brian FishmanBrian Fishman is a counterterrorism research fellow at the New America Foundation., Katherine Tiedemann, Peter Bergen<p>
Peter Bergen, a frequent visitor to Afghanistan since
1993, is author of Manhunt: The Ten-Year Search for bin Laden
from 9/11 to Abbottabad.