Kabul

An Afghan youth sits astride the gun barrel of a Soviet-era tank, in Kabul, Afghanistan, 29 August 2014. Soviet troops occupied the country for ten years from 1979 to 1989.

Jawad Jalali/EPA

An Afghan youth sits astride the gun barrel of a Soviet-era tank, in Kabul, Afghanistan on Friday. Soviet Union troops occupied Afghanistan for ten years from 1979

Afghan security personnel investigate a damaged minivan which was hit by a remote controlled bomb on the outskirts of Kabul, Afghanistan, Tuesday, July 15, 2014. Gul Agha Hashimi, the chief of criminal investigations with the Kabul police, said the explosion struck the minivan carrying seven staffers of the palace's media office on Tuesday morning. The blast killed two passengers and also wounded five people, including the driver.

Rahmat Gul/AP

Afghan security personnel investigate a damaged minivan which was hit by a remote controlled bomb on the outskirts of Kabul, Afghanistan on Tuesday

Supporters of Afghan presidential candidate Abdullah Abdullah take down a large portrait of Afghan President Hamid Karzai before a gathering in Kabul July 8, 2014. Abdullah told thousands of supporters on Tuesday he was the winner of last month's run-off election, putting himself on a collision course with his arch-rival, Ashraf Ghani. REUTERS/Omar Sobhani (AFGHANISTAN - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY)

Omar Sobhani/Reuters

Supporters of Afghan presidential candidate Abdullah Abdullah take down a large portrait of Afghan president Hamid Karzai before a gathering in Kabul. Abdullah on Tuesday told thousands of supporters he was the winner of last month’s run-off election, putting himself on a collision course with his rival, Ashraf Ghani.

Supporters of Afghan presidential candidate Abdullah Abdullah chant slogans during a protest in Kabul, Afghanistan, Friday, June 27, 2014. Afghanistan's security situation has been complicated by a political crisis stemming from allegations of massive fraud in the recent election to replace President Hamid Karzai, the only leader the country has known since the Taliban regime was ousted nearly 13 years ago. Abdullah Abdullah, one of two candidates who competed a runoff vote on June 14 suspended his relations with the Independent Election Commission after he accused electoral officials of engineering extensive vote rigging, allegations they have denied

Rahmat Gul/AP

Supporters of Afghan presidential candidate Abdullah Abdullah chant slogans during a protest in Kabul, Afghanistan on Friday

Afghan National Army (ANA) soldiers prepare to leave their base for a patrol at polling stations in the outskirts of Kabul June 12, 2014. The second round of Afghanistan's presidential election will be held on June 14.

Omar Sobhani/Reuters

Afghan National Army soldiers prepare to leave their base for a patrol at polling stations in the outskirts of Kabul. The second round of Afghanistan’s presidential elections will be held on June 14

Assasination Attempt Made Against Afghan Presidential Candidate...KABUL, AFGHANISTAN - JUNE 06:  People look at the site of a suicide attack that struck the convoy of presidential candidate Abdullah Abdullah on June 6, 2014 in Kabul, Afghanistan. The Afghan Interior Ministry says a suicide bomber and a roadside bomb struck the convoy as it left a campaign event at a wedding hall in the capital Kabul, killing several civilians but leaving the candidate himself unharmed.  (Photo by Majid Saeedi/Getty Images)

Majid Saeed/Getty

People look down at the site of a suicide attack that struck the convoy of presidential candidate Abdullah Abdullah in Kabul, Afghanistan. The Afghan Interior Ministry says a suicide bomber and a roadside bomb struck the convoy as it left a campaign event at a wedding hall in the capital Kabul, killing several civilians but leaving the candidate himself unharmed.

Afghan children pose for a photograph holding images of victims of war during a memorial ceremony in front of the destroyed palace of Darul Aman in Kabul. Members of the Transitional Justice Group, survivors and civil society activists gathered to pay tribute to the memory of those killed during the last three decades of war in Afghanistan.

Wakil Kohsar/AFP/Getty Images

Afghan children pose for a photograph holding images of victims of war during a memorial ceremony in front of the destroyed palace of Darul Aman in Kabul. Members of the Transitional Justice Group, survivors and civil society activists gathered to pay tribute to the memory of those killed during the last three decades of war in Afghanistan.

A supporter of Afghan presidential candidate Abdullah Abdullah attends the final day of election campaigning outside Kabul...A supporter of Afghan presidential candidate Abdullah Abdullah attends the final day of election campaigning outside Kabul April 2, 2014. The Afghan presidential elections will be held on April 5.  REUTERS/Ahmad Masood (AFGHANISTAN - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY)

Ahmad Masood/Reuters

A supporter of Afghan presidential candidate Abdullah Abdullah attends the final day of election campaigning near Kabul. Elections are to be held on Saturday Read more

Afghan women line up to have their picture taken to register for the upcoming presidential elections in a school in Kabul, Afghanistan, Tuesday, March 18, 2014. Last minute registration of voters continues despite the fact that more than 21 million voter registration cards have been issued while only roughly 12 million Afghans are eligible to vote. The discrepancy is the result of repeated registrations since the first round of elections in Afghanistan in 2004. (AP Photo/Anja Niedringhaus)

Anja Niedringhaus/AP

Women in Afghanistan line up to have their picture taken at a school in Kabul, Afghanistan to register for presidential elections. Last-minute registration of voters continues despite more than 21 million voter registration cards having been issued while only roughly 12 million Afghans are eligible to vote. The discrepancy is the result of repeated registrations since the first round of elections in Afghanistan in 2004. Read more

An Afghan honour  guard stands next to pictures of late Afghan Vice President Field Marshal Mohammed Qasim Fahim outside his house in Kabul, Afghanistan, Monday, March 10, 2014. Afghanistan's influential Vice President Fahim, a leading commander in the alliance that fought the Taliban who was later accused with other warlords of targeting civilian areas during the country's civil war, died on Sunday. He was 57.

Anja Niedringhaus/AP

An Afghan honour guard stands next to pictures of late Afghan vice-president Mohammed Qasim Fahim outside his house in Kabul, Afghanistan on Monday. Afghanistan’s influential vice-president, a leading commander in the alliance that fought the Taliban who was later accused with other warlords of targeting civilian areas during the country’s civil war, died on Sunday of natural causes. He was 57.