Pakistani Dawlat Gul, 7, third left, enjoys playing on a swing along with other children on the outskirts of Islamabad, Pakistan, Friday, July 13, 2012. (Photo by Muhammed Muheisen/AP Photo)

Palestinian Rama Abu alreesh, 6, displays two toy guns, while playing in an alley of Al-Ain refugee camp during the third day of Eid al-Fitr which marks the end of the Muslim fasting month of Ramadan near the West Bank city of Nablus, Sunday, September 12, 2010. Eid, one of the most important holidays in the Muslim world, is marked with prayers, family reunions and other festivities. (Photo by Muhammed Muheisen/AP Photo)

South African children play football with a torn ball in a yard in a Soweto township on the outskirts of Johannesburg, South Africa, Wednesday, July 3, 2013. (Photo by Muhammed Muheisen/AP Photo)

Pakistani children who fled their villages with their families due to fighting between security forces and militants in Pakistan's tribal area of Bajur, enjoy a ride on a merry-go-round at a makeshift entertainment park set up in a slum area on the outskirts of Islamabad, Pakistan, Friday, May 11, 2012. (Photo by Muhammed Muheisen/AP Photo)

Pakistani Christian boy, Suhail Pervez, 9, plays snooker on a table he built, in a slum that hosts Christian families, in Islamabad, Pakistan, Thursday, March 27, 2014. (Photo by Muhammed Muheisen/AP Photo)

Pakistani children play with plastic bags in a slum area on the outskirts of Islamabad, Pakistan, Sunday, May 20, 2012. (Photo by Muhammed Muheisen/AP Photo)

An Afghan refugee boy chases a balloon while playing in a poor neighborhood on the outskirts of Islamabad, Pakistan, Sunday, February 2, 2014. (Photo by Muhammed Muheisen/AP Photo)

An Afghan girl sits on the ground dressing her doll while playing in an alley in Kabul, Afghanistan, Thursday, April 3, 2014. (Photo by Muhammed Muheisen/AP Photo)

Iraqi children play in an old Iraqi army camp, which was bombed by the U.S army during the war, where they live with their families near Baghdad, Iraq, Friday, March 26, 2004. (Photo by Muhammed Muheisen/AP Photo)

A young Chinese boy plays snooker with another boy, unseen, in a Hutong, or a traditional alleyway of Beijing, China, Tuesday, July 13, 2010. (Photo by Muhammed Muheisen/AP Photo)

Afghan refugee children, play with a ball, while a girl holding her brother, sits on the ground of an alley selling food, at a poor neighborhood on the outskirts of Islamabad, Pakistan, Sunday, September 28, 2014. (Photo by Muhammed Muheisen/AP Photo)

A Chinese girl, reaches for her toy, while playing outside her house along with other children, in a Hutong, or a traditional alleyway of Beijing, China, Sunday, June 13, 2010. (Photo by Muhammed Muheisen/AP Photo)

Yemeni girl Zamzam Mansour, 10, center, skips with a rope while playing with other children next to her father's shop in an alley of the old city of Sanaa, Yemen, Saturday, November 27, 2010. (Photo by Muhammed Muheisen/AP Photo)

Yemeni children, center, play table football on a table they created, in an alley of the old city of Sanaa, Yemen, on Friday, November 26, 2010. (Photo by Muhammed Muheisen/AP Photo)

Chinese boys play ping pong in a hutong, or a traditional alleyway, of Beijing, China, Saturday, July 10, 2010. (Photo by Muhammed Muheisen/AP Photo)

A boy looks back while he and another boy play on a Syrian military tank, destroyed during fighting with the Rebels, in the Syrian town of Azaz, on the outskirts of Aleppo, Sunday, September 2, 2012. (Photo by Muhammed Muheisen/AP Photo)