Capt. Mike Miller, with Delta Company, 2nd Brigade Combat Team of the 101st Airborne Division, rides in his Humvee during a training mission at Fort Polk, La. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR

Gulbuddin Hekmatyar (shown here in Iran in 2001), leader of the militant Hizb-i-Islami group, has recently made peace overtures to Afghan President Hamid Karzai. But observers are unsure about his motives. Atta Kenare/AFP/Getty Images hide caption

itoggle caption Atta Kenare/AFP/Getty Images

Marine Sgt. Maj. Robert Breeden, at Camp Leatherneck in Afghanistan on June 12, 2009. Breeden is now home from Afghanistan and trying to stay busy. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR

President Obama walks with Afghan President Hamid Karzai during a welcoming ceremony at the Presidential Palace on Sunday night in Kabul. Jim Watson/AFP/Getty Images hide caption

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Police officers from the district of Argu swing away with long sticks to eradicate a patch of illegally grown poppies in the Badakhshan province of Afghanistan. The opium trade is a key source of funding for the Taliban — but counterterrorism experts say it will take more than shutting down opium production to crack the Taliban's finances. Julie Jacobson/AP hide caption

itoggle caption Julie Jacobson/AP