The New York Times Agency Photos
AFGHAN
**FILE PHOTO** Elders from the Shinwari tribe on Jan. 27, 2010, in Jalalabad, Afghanistan, where they pledged to set aside differences to fight the Taliban. Fighting between two Afghan subtribes has raised questions about using tribes as part of a counterinsurgency strategy, given the patchwork of rivalries in Afghanistan. (Adam Ferguson/The New York Times)