An Afghan girl looks on as a health worker administers polio vaccine drops to others during a vaccination campaign on the outskirts of Jalalabad on October 17, 2016. Polio, once a worldwide scourge, is endemic in just three countries now – Afghanistan, Nigeria and Pakistan. (Photo by Noorullah Shirzada/AFP Photo)





Haseebullah 7, rides his bicycle with a friend on the outskirts of Kabul, Afghanistan, Thursday, November 3, 2016. (Photo by Rahmat Gul/AP Photo)





A burqa-clad Afghan woman walks in the old quarters of Herat, Afghanistan, November 16, 2016. (Photo by Aref Karmi/AFP Photo)





This photograph taken on October 18, 2016 shows Afghan youths playing with a kite on the outskirts of Jalalabad. (Photo by Noorullah Shirzada/AFP Photo)





An Afghan woman walks along a street following a snowfall on the outskirts of Mazar-i-Sharif on November 23, 2016. (Photo by Farshad Usyan/AFP Photo)





Afghan policemen walk inside the Sakhi Shrine after a overnight attack in Kabul, Afghanistan October 12, 2016. (Photo by Mohammad Ismail/Reuters)





An Afghan man sells pomegranates along a street in Kabul, Afghanistan October 19, 2016. (Photo by Omar Sobhani/Reuters)





An Afghan woman, wearing a burqa, rides on a donkey alongside her husband in the Ishkashim district of Badakhshan province, north east of Kabul April 24, 2008. (Photo by Ahmad Masood/Reuters)





An Afghan family travels with a donkey in the Argo district in Badakhshan province May 5, 2014. (Photo by Mohammad Ismail/Reuters)





Labourers work at a coal dump site in Kabul, Afghanistan November 15, 2016. (Photo by Mohammad Ismail/Reuters)





An Afghan policeman stands guard at the site of a suicide bombing in Kabul, Afghanistan, November 16, 2016. (Photo by Mohammad Ismail/Reuters)





Afghan women collect saffron flowers in the Karukh district of Herat, Afghanistan, November 5, 2016. (Photo by Mohammad Shoib/Reuters)





Afghan women collect saffron flowers in the Karukh district of Herat, Afghanistan, November 5, 2016. (Photo by Mohammad Shoib/Reuters)





Afghan women collect saffron flowers in the Karukh district of Herat, Afghanistan, November 5, 2016. (Photo by Mohammad Shoib/Reuters)





An Afghan policeman stands guard at the site of blast in Jalalabad city, Afghanistan November 25, 2016. (Photo by Reuters/Parwiz)





An Afghan security force personnel walks in Parun, capital of Nuristan province, Afghanistan November 22, 2016. Picture taken November 22, 2016. (Photo by Hamid Shalizi/Reuters)





Afghan security forces and Afghan elders walk towards a check post in Parun, capital of Nuristan province, Afghanistan November 20, 2016. (Photo by Hamid Shalizi/Reuters)





An Afghan man digs a grave for a victim in Kabul on October 12, 2016, who was killed in an attack by gunmen inside the Karte Sakhi shrine late on October 11 Grieving worshippers on October 12 described desperately trying to shelter their children against a hail of gunfire in Kabul that killed at least 18 people gathering to mark Ashura, one of the most important festivals of the Shiite calendar. (Photo by Shah Marai/AFP Photo)





In this photograph taken on October 4, 2016, an Afghan baker prepares bread at his shop as he waits for customers in Lashkar Gah, the capital city of Helmand province. For years Helmand was the centerpiece of the Western military intervention in Afghanistan only for it to slip deeper into a quagmire of instability, with almost the entire southern province teetering on the verge of collapse. Intensified fighting has killed hundreds and forced thousands to flee to besieged capital Lashkar Gah, sparking a humanitarian crisis as the city – one of the last government- held enclaves – risks falling to the Taliban' s repeated ferocious assaults. (Photo by Wakil Kohsar/AFP Photo)





In this Monday, December 5, 2016 photo, Afghan women walk on a street in Kabul, Afghanistan. Afghans are increasingly uncertain about their future, less confident in their government and more pessimistic than before on issues such as security, corruption, and rising unemployment, according to the annual survey by the San Francisco-based Asia Foundation released on Wednesday, Dec. 7, 2016. (Photo by Rahmat Gul/AP Photo)





An Afghan man feeds pigeons in the courtyard of the the famous Blue Mosque in Mazar-i-sharif on Nov 24, 2016. (Photo by Farshad Usyan/AFP Photo)





Afghan boys play with tyres along a street on the outskirts of Herat on November 24, 2016. (Photo by Aref Karimi/AFP Photo)





An Afghan street vendor, selling peanuts, waits for customer on the outskirts of Kabul, Afghanistan, Sunday, December 4, 2016. (Photo by Rahmat Gul/AP Photo)