** FILE ** An Afghan man, injured in a suicide attack gestures from an ambulance in Kabul, Afghanistan, Saturday, June 18, 2011. Men dressed in Afghan army uniforms stormed the police station near the presidential palace and opened fire said Mohammed Honayon, an eyewitness. (AP Photo/Gemunu Amarasinghe)
Afghan police men stand guard outside the mosque after a suicide attack in Kandahar, Afghanistan, on July 14, 2011. The bomber blew himself up inside the mosque during a memorial service for the assassinated half brother of Afghan President Hamid Karzai, killing four people, the government said. (Associated Press)
ASSOCIATED PRESS PHOTOGRAPHS
The lifeless body of Sardar Mohammad, who assassinated Ahmed Wali Karzai, the half-brother of Afghanistan's president, hangs briefly from a building Tuesday in Charso Chowk, Kandahar province.
Afghan President Hamid Karzai (center) attends the burial Wednesday of half brother Ahmed Wali Karzai in his family's ancestral village of Karz in Kandahar province. The president's half brother was assassinated at his home Tuesday.
**FILE** President Obama acknowledges family members and friends of U.S. Army Sgt. First Class Leroy Arthur Petry of Santa Fe, N.M., during a ceremony at the White House during which Petry was awarded the Medal of Honor for his valor in Afghanistan. (Associated Press)
** FILE ** In this Wednesday, April 14, 2010, file photo Ahmad Wali Karzai, half-brother of Afghanistan's President Hamid Karzai gestures during an interview with the Associated Press in Kandahar, Afghanistan. An Afghan official says Ahmad Wali Karzai was killed in southern Afghanistan. (AP Photo/Rahmat Gul, File)
EYEWITNESS: Rep. Duncan Hunter, a California Republican who has just returned from a fact-finding trip to Afghanistan, said, "We have to let Pakistan know we have to go after targets that are so embarrassing to them ... [that] when Pakistan cries 'foul,' everybody just kind of laughs at it and shrugs it off and says, 'Good job, America.' " (Associated Press)
** FILE ** Lt. Gen. Curtis Scaparrotti (left) receives a flag from Gen. David H. Petraeus (second from left) as Lt. Gen. David M. Rodriguez (right) looks on during a change of command ceremony in Kabul, Afghanistan, on Monday, July 11, 2011. (AP Photo/Rafiq Maqbool)
Defense Secretary Leon E. Panetta greets members of the helicopter medivac crew attached to the 115th Combat Support Hospital while making an unannounced visit to Camp Dwyer in southern Afghanistan on Sunday, July 10, 2011. (AP Photo/Paul J. Richards, Pool)
Afghans stand at the scene where a guard opened fire at a NATO-escorted reconstruction convoy in Dara, Panjshir province, north of Kabul, Afghanistan, on Saturday, July 9, 2011. The shooter killed a NATO service member and a civilian working for the coalition before being killed by return fire, the provincial police chief said. (AP Photo)
A Russian-built Ilyushin-76 cargo plane of Silk Way Airlines, similar to the aircraft shown here, crashed into a mountaintop in eastern Afghanistan on Wednesday, July 6, 2011, officials said. The nine crew members on board are feared dead. (AP Photo/www.silkway-airlines.com)
Sen. Carl Levin (left), Senate Armed Services Committee chairman, welcomes Navy Vice Adm. William H. McRaven (center), the nominee to become commander of the U.S. Special Operations Command, and Marine Lt. Gen. John Allen, nominee to become commander of U.S. forces in Afghanistan, at the start of confirmation hearings on Capitol Hill in Washington on Tuesday, June 28, 2011. (AP Photo/J. Scott Applewhite)
Brig. Gen. Dean Milner (center), commander of Canadian forces in Afghanistan, and Afghan army Brig. Gen. Ahmad Habibi (right) give the lay of the land to U.S. Army Col. Todd Wood (left) at an observation post on Forward Operating Base Sperwan Ghar in the Panjwaii district of Afghanistan's Kandahar province on Tuesday, June 28, 2011. The Canadians will end combat operations in July as troops withdraw from the southern region and transition to a noncombat training role. (AP Photo/David Goldman)
**FILE** In this photo taken Dec. 7, 2010, former Defense Secretary Robert M. Gates pins Combat Infantry badges on soldiers at Forward Operating Base Connolly in Kunar Province, Afghanistan. (Associated Press)
Marc Grossman, U.S. special representative to Afghanistan and Pakistan, speaks during a press conference at a meeting of the International Contact Group in Kabul, Afghanistan, on Monday, June 27, 2011. Mr. Grossman said Pakistan must prove it wants an end to the war by preventing militants from hiding out on its soil and enabling those who launch attacks on the Afghan side of the border. (AP Photo/Musadeq Sadeq)