A Kurdish Peshmerga fighter launches mortar shells towards Zummar, which is controlled by the Islamic State (IS), near Mosul, in this September 15, 2014 file photo. (Photo by Ahmed Jadallah/Reuters)

Anti-war protesters hold up signs as U.S. Secretary of Defense Chuck Hagel takes his seat to testify at the Senate Armed Services Committee hearing on the U.S. policy toward Iraq and Syria and the threat posed by the Islamic State, on Capitol Hill in Washington, in this September 16, 2014 file photo. (Photo by Kevin Lamarque/Reuters)

A seagull flies past the Trump Plaza Hotel and Casino, one of two casinos owned by Trump Entertainment Resorts, in Atlantic City, New Jersey, in this September 15, 2014 file photo. (Photo by Adrees Latif/Reuters)

A fisherman transports a dead whale shark after it was caught in fishermen's nets, in Yangzhi county, Fujian province, in this August 1, 2014 file photo. (Photo by Reuters/Stringer)

Palestinians carry a wounded boy who was evacuated from under the rubble of a house, which witnesses said was destroyed in an Israeli air strike, in Rafah in the southern Gaza Strip, in this August 3, 2014 file photo. (Photo by Ibraheem Abu Mustafa/Reuters)

Mao Changxue changes his son's clothes after the boy's body was dug out from the debris of their home in Longtoushan town in Ludian county of Zhaotong, Yunnan province, in this August 4, 2014 file photo. (Photo by Reuters/Stringer)

Firefighters battling the King Fire watch as a backfire burns along Highway 50 in Fresh Pond, California, in this September 16, 2014 file photo. (Photo by Noah Berger/Reuters)

Radical Muslim cleric Abu Qatada smiles as he sits and waits behind bars before his acquittal at the State Security Court in Amman, in this September 24, 2014 file photo. (Photo by Muhammad Hamed/Reuters)

A U.S. Secret Service agent with an automatic rifle hurries people to evacuate the White House complex over a security alert moments after U.S. President Barack Obama and his family left for the presidential retreat Camp David in Maryland, in this September 19, 2014 file photo. (Photo by Larry Downing/Reuters)

Bodies of flood victims lie in a boat after they were found in floodwater at Balbala village in Goalpara district in the northeastern Indian state of Assam, in this September 24, 2014 file photo. (Photo by Reuters/Stringer)

A Syrian Kurdish refugee waits for transport during a sandstorm on the Turkish-Syrian border near the southeastern town of Suruc in Sanliurfa province, in this September 24, 2014 file photo. (Photo by Murad Sezer/Reuters)

New York Yankees shortstop Derek Jeter (2) hits a walk-off single against the Baltimore Orioles during the ninth inning at Yankee Stadium in New York, in this file picture taken September 25, 2014. (Photo by Brad Penner/Reuters/USA TODAY Sports)

Japan Self-Defense Force (JSDF) soldiers and fire-fighters conduct rescue operations at mountain lodges covered with volcanic ash as volcanic smoke rises near the peak of Mt. Ontake, which straddles Nagano and Gifu prefectures, in this file September 28, 2014 photo taken and released by Kyodo. (Photo by Reuters/Kyodo News)

An Aurora Borealis (Northern Lights) is seen over a mountain camp north of the Arctic Circle, near the village of Mestervik, in this September 30, 2014 file photo. (Photo by Yannis Behrakis/Reuters)

Cattle graze on the Great Hungarian Plain in Hortobagy, east of Budapest, in this September 25, 2014 file photo. (Photo by Laszlo Balogh/Reuters)

Bodies of people killed by recent shelling lie at a bus stop near a burnt-out bus on a street in Donetsk, eastern Ukraine, in this October 1, 2014 file photo. (Photo by Shamil Zhumatov/Reuters)

A kilogram (2.2 lbs) of raw carrots is photographed in a studio with an illustrative price tag of $19.05, equivalent to the Bs. 120 (bolivars) that it costs on average to purchase in Caracas at the official exchange rate of 6.3 bolivars per dollar, in Caracas, in this September 29, 2014 file photo. (Photo by Carlos Garcia Rawlins/Reuters)

Russian Interior Ministry members stand guard as Muslims attend an Eid al-Adha mass prayer in Moscow, in this October 4, 2014 file photo. (Photo by Sergei Karpukhin/Reuters)

An Islamic State fighter walks near a black flag belonging to the Islamic State as a Turkish army vehicle takes up position near the Syrian town of Kobani, as pictured from the Turkish-Syrian border near the southeastern town of Suruc, Sanliurfa province,in this October 7, 2014 file photo. (Photo by Umit Bektas/Reuters)

Mount Sinabung volcano erupts, as seen from Tiga Pancur village, Karo Regency in Indonesia's North Sumatra province, in this October 8, 2014 file photo. (Photo by Y. T. Haryono/Reuters)

Shi'ite Houthi rebels carry wounded men after a suicide attack in Sanaa, in this October 9, 2014 file photo. (Photo by Khaled Abdullah/Reuters)

Children practise during a training session at a circus school in Havana, in this September 29, 2014 file photo. (Photo by Alexandre Meneghini/Reuters)

A woman reporter runs with a rebel fighter to avoid snipers on the frontline against the Islamic State fighters in Aleppo's northern countryside, in this October 10, 2014 file photo. (Photo by Jalal Al-Mamo/Reuters)

Light is beamed into the sky from Trafalgar Square to mark the 100th anniversary of the outbreak of World War One, in London, in this August 4, 2014 file photo. (Photo by Paul Hackett/Reuters)

An injured worker is seen trapped under the rubble of a collapsed condominium building, which had been under construction, in Pathum Thani province, on the outskirts of Bangkok, in this August 12, 2014 file photo. (Photo by Chaiwat Subprasom/Reuters)