Smoke rises after NATO aircraft conduct an airstrike near the Arghandab River, south of Senjeray village, in Afghanistan's Kandahar province, where U.S. commanders had identified as insurgent positions, Sept. 11, 2010. As the U.S. cracks down on insurgents in Afghanistan, survivors flee to safe havens across the border in Pakistan. Now, the U.S. is ramping up strikes on Pakistan's lawless border region. Todd Pittman/AP hide caption

itoggle caption Todd Pittman/AP

U.S. Army 1s Lt. Blair Downey patrols with Afghan army soldiers in Kandahar province, Afghanistan, last month. Brennan Linsley/AP hide caption

itoggle caption Brennan Linsley/AP

An Afghan policeman holds his weapon close during a joint patrol with U.S. soldiers on the outskirts of Kandahar city. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR