A Palestinian boy rides in a car driving past residential buildings in Beit Lahiya town, which witnesses said was heavily hit by Israeli shelling and air strikes during the Israeli offensive, in the northern Gaza Strip, in this August 7, 2014 file photo. (Photo by Mohammed Salem/Reuters)

Relatives of Palestinian woman Amani Baraka, whom medics said was killed in an Israeli air strike, mourn during her funeral in Khan Younis in the southern Gaza Strip, in this August 10, 2014 file photo. (Photo by Ibraheem Abu Mustafa/Reuters)

A boy who underwent circumcision rests inside a house after undergoing the rite of passage ritual in Kenya's western region of Bungoma, in this August 8, 2014 file photo. (Photo by Noor Khamis/Reuters)

Visitors run away as waves caused by a tidal bore surge past a barrier on the banks of Qiantang River, in Hangzhou, Zhejiang province, in this August 13, 2014 file photo. (Photo by Reuters/Stringer)

A protester is helped with the effects of tear gas after it was fired at demonstrators reacting to the shooting of Michael Brown in Ferguson, Missouri, in this August 17, 2014 file photo. (Photo by Lucas Jackson/Reuters)

Police stand guard during a news conference by WikiLeaks founder Julian Assange at the Ecuadorean embassy in central London, in this August 18, 2014 file photo. (Photo by Toby Melville/Reuters)

Police officers detain a demonstrator for protesting against the fatal shooting of Michael Brown in Ferguson, Missouri, in this August 18, 2014 file photo. (Photo by Joshua Lott/Reuters)

Tracer bullets ricochet off their targets as Japanese Ground Self-Defense Force tanks fire their machineguns during a night session of an annual training exercise at Higashifuji training field near Mount Fuji in Gotemba, west of Tokyo, in this August 19, 2014 file photo. (Photo by Yuya Shino/Reuters)

Hamas militants grab Palestinians suspected of collaborating with Israel, before executing them in Gaza City, in this August 22, 2014 file photo. (Photo by Reuters/Stringer)

A man comforts a woman, after both were wounded by what locals say was recent shelling by Ukrainian forces in Donetsk, in this August 23, 2014 file photo. (Photo by Maxim Shemetov/Reuters)

Michael Brown Sr. yells out as his son's casket is lowered into the ground at St. Peter's Cemetery in St. Louis, Missouri, in this August 25, 2014 file photo. (Photo by Richard Perry/Reuters)

Russian President Vladimir Putin (L) shakes hands with his Ukrainian counterpart Petro Poroshenko, as Kazakh President Nursultan Nazarbayev (C) stands nearby, in Minsk, in this August 26, 2014 file photo. (Photo by Sergei Bondarenko/Reuters/Kazakh Presidential Office)

The art installation Pulse & Bloom is seen during the Burning Man 2014 “Caravansary” arts and music festival in the Black Rock Desert of Nevada, in this August 29, 2014 file photo. (Photo by Jim Urquhart/Reuters)

Health workers push an Ebola patient who escaped from quarantine at Monrovia's ELWA Hospital, into an ambulance in the centre of Paynesville, in this file still image taken from a September 1, 2014 video. (Photo by Reuters/Reuters TV)

Anti-government protesters beat a riot policeman after clashes during the Revolution March in Islamabad, in this September 1, 2014 file photo. (Photo by Faisal Mahmood/Reuters)

A model has make-up applied backstage before showing the BCBG Max Azria collection during New York Fashion Week, in this September 4, 2014 file photo. (Photo by Lucas Jackson/Reuters)

Serena Williams of the U.S. bounces a ball as she serves to Caroline Wozniacki of Denmark during their women's singles finals match at the 2014 U.S. Open tennis tournament in New York, in this September 7, 2014 file photo. (Photo by Adam Hunger/Reuters)

Ashya King, a five-year-old British boy with a brain tumour, lies on a stretcher as he arrives with his parents at Motol hospital in Prague, in this September 8, 2014 file photo. (Photo by David W. Cerny/Reuters)

Pro-Russian rebels stand near a monument during a ceremony to honour the World War Two defenders of Donetsk from Nazi forces, in Donetsk, in this September 8, 2014 file photo. (Photo by Marko Djurica/Reuters)

A Kurdish Peshmerga fighter holds a a rocket-propelled grenade launcher as he takes up position in an area overlooking Baretle village (background), which is controlled by the Islamic State, in Khazir, on the edge of Mosul, in this September 8, 2014 file photo. (Photo by Ahmed Jadallah/Reuters)

A boy collects items thrown by devotees as religious offerings next to idols of the Hindu elephant god Ganesh, the deity of prosperity, a day after they were immersed in the waters of the Sabarmati river in the western Indian city of Ahmedabad, in this September 9, 2014 file photo. (Photo by Amit Dave/Reuters)

An injured man sits at a field hospital after what activists said were air strikes by forces loyal to Syria's President Bashar al-Assad, in the Duma neighbourhood of Damascus, in this September 9, 2014 file photo. (Photo by Badra Mamet/Reuters)

Residents carry an injured man out from the debris at a site hit by what activists claim were at least five air strikes by forces of Syria's President Bashar al-Assad in Douma, eastern al-Ghouta, near Damascus, in this September 11, 2014 file photo. (Photo by Bassam Khabieh/Reuters)

Chicken farmer Craig Watts pauses while dissecting a euthanized chicken to check it for disease, at C&A Farms in Fairmont, North Carolina, in this June 11, 2014 file photo. (Photo by Randall Hill/Reuters)

Tereza Vaculikova of the Czech Republic performs a jump during the women's freestyle skiing moguls qualification round at the 2014 Sochi Winter Olympic Games in Rosa Khutor, in this February 8, 2014 file photo. (Photo by Mike Blake/Reuters)