An injured NATO soldier lies on the ground following a suicide car bomb attack that targeted foreign military vehicles in the Afghan capital Kabul on June 30,2015. A powerful blast hit downtown Kabul on June 30 as a suicide car bomber targeted foreign military vehicles, officials said, with casualties feared. The blast came on the main road to the airport, around 500 meters (550 yards) from the US embassy and near a base for foreign troops.“It was a suicide car bomber targeting a convoy of foreign forces in Kabul”, interior ministry spokesman Sediq Sediq said. (Photo by Wakil Kohsar/AFP Photo)

A NATO soldier walks near a damaged vehicle at the site of a suicide attack on a NATO convoy in Kabul, Afghanistan, Tuesday, June 30, 2015. It comes a week after an audacious attack on the nation's parliament, which highlighted the ability of insurgents, who have been fighting to overthrow the Kabul government for almost 14 years, to enter the highly fortified capital to stage deadly attacks. (Photo by Rahmat Gul/AP Photo)

An Afghan boy holds a copy of the Koran at the site of an attack on police headquarters in the provincial capital, Lashkar Gah of the southern Helmand province, Afghanistan, June 30, 2015. At least two civilians died and more than forty were injured during suicide car bomb attack in Lashkar Gah, police said. (Photo by Abdul Malik/Reuters)

U.S. soldiers attend to a wounded soldier at the site of a blast in Kabul, Afghanistan June 30, 2015. A suicide bomber attacked a convoy of foreign troops serving with NATO on the main road running between Kabul's airport and the U.S. embassy, police and security officials said. (Photo by Mohammad Ismail/Reuters)

An Afghan policeman reacts at the site of a suicide bomb attack in Kabul, Afghanistan June 30, 2015. (Photo by Ahmad Masood/Reuters)

U.S. soldiers inspect the site of a suicide attack in Kabul, Afghanistan June 30, 2015. (Photo by Mohammad Ismail/Reuters)

An Afghan man tries to console a woman at the site of suicide bomb attack in Kabul, Afghanistan June 30, 2015. (Photo by Ahmad Masood/Reuters)

U.S. soldiers attend to a wounded soldier at the site of a suicide bomb attack in Kabul, Afghanistan June 30, 2015. (Photo by Mohammad Ismail/Reuters)

An Afghan policeman keeps watch at the site of a suicide bomb attack in Kabul, Afghanistan June 30, 2015. (Photo by Ahmad Masood/Reuters)

Afghan security personnel react at the site of a suicide bomb attack in Kabul, Afghanistan June 30, 2015. (Photo by Ahmad Masood/Reuters)

Afghan policemen stand at the site of a suicide bomb attack in Kabul, Afghanistan June 30, 2015. (Photo by Ahmad Masood/Reuters)

A NATO soldier stands at the site of a suicide bomb attack in Kabul, Afghanistan June 30, 2015. (Photo by Ahmad Masood/Reuters)

A NATO soldier walks at the site of a suicide bomb attack in Kabul, Afghanistan June 30, 2015. (Photo by Ahmad Masood/Reuters)

Afghan policemen stand at the site of a suicide bomb attack in Kabul, Afghanistan June 30, 2015. (Photo by Ahmad Masood/Reuters)

NATO soldiers walk at the site of a suicide bomb attack in Kabul, Afghanistan June 30, 2015. (Photo by Ahmad Masood/Reuters)

An Afghan security personnel inspects a damaged car at the site of a suicide bomb attack in Kabul, Afghanistan June 30, 2015. (Photo by Ahmad Masood/Reuters)

U.S. soldiers attend to a wounded soldier at the site of a blast in Kabul, Afghanistan June 30, 2015. (Photo by Omar Sobhani/Reuters)

An Afghan boy is reflected on the window of a damaged vehicle at the site of a car bomb in Kabul, Afghanistan, June 30, 2015. (Photo by Omar Sobhani/Reuters)

Afghan men remove the broken window of a car at the site of a suicide bomb attack in Kabul, Afghanistan, June 30, 2015. (Photo by Omar Sobhani/Reuters)

Afghan men look out from their window house at the site of a suicide bomb attack in Kabul, Afghanistan, June 30, 2015. (Photo by Omar Sobhani/Reuters)

A fire fighter sprays water to clean the site of a suicide car bomb attack in Kabul, Afghanistan, June 30, 2015. (Photo by Omar Sobhani/Reuters)

An Afghan policeman inspects the site of a suicide bomb attack in Kabul, Afghanistan, June 30, 2015. (Photo by Omar Sobhani/Reuters)

U.S. troops arrive at the site of a suicide bomb attack in Kabul, Afghanistan, June 30, 2015. (Photo by Omar Sobhani/Reuters)

A U.S. soldier inspects the site of a suicide bomb attack in Kabul, Afghanistan, June 30, 2015. (Photo by Omar Sobhani/Reuters)

An Afghan woman cries out at the site of a suicide attack on a NATO convoy in Kabul, Afghanistan, Tuesday, June 30, 2015. (Photo by Rahmat Gul/AP Photo)

An Afghan soldier beats a man at the site of a suicide car bomb attack on a NATO convoy in Kabul, Afghanistan, Tuesday, June 30, 2015. An eyewitness said the man was later released. (Photo by Massoud Hossaini/AP Photo)

Afghan civilians react at the site of a suicide attack on a NATO convoy in Kabul, Afghanistan, Tuesday, June 30, 2015. (Photo by Massoud Hossaini/AP Photo)

An Afghan policeman shouts at the site of a suicide attack on a NATO convoy in Kabul, Afghanistan, Tuesday, June 30, 2015. (Photo by Massoud Hossaini/AP Photo)

A destroyed armored vehicle remains at the site of a suicide attack on a NATO convoy in Kabul, Afghanistan, Tuesday, June 30, 2015. (Photo by Rahmat Gul/AP Photo)

Afghan security forces beat a man at the site of a suicide car bomb attack on a NATO convoy in Kabul, Afghanistan, Tuesday, June 30, 2015. An eyewitness said the man was later released. (Photo by Massoud Hossaini/AP Photo)

Armored vehicles remain at the site of a blast targeting the NATO convoy in Kabul, Afghanistan, Tuesday, June 30, 2015. (Photo by Massoud Hossaini/AP Photo)

Afghan and NATO security forces work at the site of a suicide attack in Kabul, Afghanistan, Tuesday, June 30, 2015. (Photo by Massoud Hossaini/AP Photo)

Afghanistan security personnel work at the site of a suicide attack in Kabul, Afghanistan, Tuesday, June 30, 2015. (Photo by Massoud Hossaini/AP Photo)