An Austrian army Alouette III helicopter hovers in front of the city hall as it lands in Vienna October 20, 2014. The army is preparing for a presentation of its capabilites on Austria's national day October 26, 2014. (Photo by Heinz-Peter Bader/Reuters)

An Austrian army Bell OH-58 “Kiowa” helicopter hovers next to a statue of Prince Eugene of Savoy as it lands in Vienna October 20, 2014. (Photo by Heinz-Peter Bader/Reuters)

An art installation made from wood and paper depict the scene of Occupy Central protesters holding up their umbrellas outside the government headquarters in Hong Kong October 20, 2014. A deepening sense of impasse gripped Hong Kong on Monday as pro-democracy protests entered their fourth week, with the government having limited options to end the crisis and demonstrators increasingly willing to confront police. (Photo by Tyrone Siu/Reuters)

A model presents a creation from the Disney Princess Collection by WTC Studio during Shanghai Fashion Week October 20, 2014. (Photo by Aly Song/Reuters)

A woman stands next to a miniature replica of the U.S. White House at a theme park called “Window Of The World” in Shenzhen, Guangdong province, October 20, 2014. The park's 48 hectares contain about 130 reproductions of some of the world's most famous tourist attractions. (Photo by Alex Lee/Reuters)

A Palestinian boy looks at statues that are made of fiberglass and covered with clay by Palestinian artist Eyad Sabbah, which are depictions for the Palestinians who fled their houses from Israeli shelling during the most recent conflict between Israel and Hamas, in the east of Gaza City October 21, 2014. (Photo by Mohammed Salem/Reuters)

A Boeing Bell V-22 Osprey is seen onboard the USS Peleliu, an amphibious assault ship docked in Subic Bay, a former U.S. Navy base next to Olongapo, northwest of Manila, October 21, 2014. Philippine President Benigno Aquino rejected on Monday calls to tear up the Visiting Forces Agreement with the United States after an American serviceman was charged with the murder of a transgender Filipino outside a former U.S Navy base. U.S. Private First Class Joseph Scott Pemberton is accused of murdering Jeffrey Laude, who also goes by the name Jennifer, in Olongapo City, about 50 km (30 miles) north of Manila. Under the Visiting Forces Agreement (VFA), the Philippines is supposed to exercise jurisdiction over such a crime. Some lawmakers and activists have called on the government to terminate the VFA unless the United States hands him over. Pemberton is under the custody of his superiors aboard USS Peleliu. (Photo by Lorgina Minguito/Reuters)

A coastguard vehicle drives along the promenade as waves crash into the shoreline at Blackpool in northern England October 21, 2014. Britain is facing strong winds and rain from the remnants of Hurricane Gonzalo, local media reported. (Photo by Andrew Yates/Reuters)

A German airline Lufthansa aircraft taxis along an empty road at Munich airport October 21, 2014. Lufthansa pilots threatened to call further strikes this week after the latest stoppage in a dispute over retirement benefits grounded two-thirds of its flights on Tuesday. (Photo by Michael Dalder/Reuters)

People gathered around a damaged armoured personnel carrier (APC) in Kiev October 21, 2014. The APC is one of a number of vehicles captured by members of the Ukrainian interior ministry's “Azov” battalion, according to their commander, from pro-russian separatists in Eastern Ukraine. (Photo by Valentyn Ogirenko/Reuters)

People walk past a pre-election poster with a portrait of Ukraine's Prime Minister Arseny Yatseniuk, leader of political party People's Front, and a candidate from the Internet party of Ukraine, Stepan Chewbacca, in the centre of Kiev October 21, 2014. Ukrainians will take part in an early parliamentary election on October 26. (Photo by Valentyn Ogirenko/Reuters)

Afghan women board a truck returning to Afghanistan from a United Nations funded repatriation centre in Peshawar October 21, 2014. (Photo by Fayaz Aziz/Reuters)

Actress Kate Hudson speaks at the 28th American Cinematheque Award ceremony in Beverly Hills, California October 21, 2014. The award is given to an artist currently making a significant contribution to motion pictures, according to the American Cinematheque website. (Photo by Mario Anzuoni/Reuters)

People stand around “Umbrellas”, the sculpture by Giorgos Zogolopoulos, as it is illuminated in pink light to mark the Breast Cancer Awareness Month in Thessaloniki in northern Greece October 21, 2014. (Photo by Alexandros Avramidis/Reuters)

Vendors selling flower garlands on a pavement wait for customers outside a flower market in the southern Indian city of Bangalore October 22, 2014. (Photo by Abhishek N. Chinnappa/Reuters)

Afghan National Army (ANA) female soldiers take part in a training exercise at the Kabul Military Training Centre (KMTC) in Kabul, October 22, 2014. (Photo by Mohammad Ismail/Reuters)

Actor and honoree Matthew McConaughey and his wife Camila Alves pose at the 28th American Cinematheque Award ceremony in Beverly Hills, California October 21, 2014. The award is given to an artist currently making a significant contribution to motion pictures, according to the American Cinematheque website. (Photo by Mario Anzuoni/Reuters)

African migrants sit atop a border fence, as Spanish Civil Guard officers in riot gear climb up to force them to climb down during an attempt to cross into Spanish territories, between Morocco and Spain's north African enclave of Melilla October 22, 2014. Around 400 migrants attempted to cross the border into Spain, according to local media. (Photo by Jesus Blasco de Avellaneda/Reuters)

A golfer hits a tee shot as African migrants sit atop a border fence during an attempt to cross into Spanish territories between Morocco and Spain's north African enclave of Melilla October 22, 2014. (Photo by Jose Palazon/Reuters)

Tablets of Avigan (generic name : Favipiravir), a drug approved as an anti-influenza drug in Japan and developed by drug maker Toyama Chemical Co, a subsidiary of Fujifilm Holdings Co. are displayed during a photo opportunity at Fujifilm's headquarters in Tokyo October 22, 2014. Japan's Fujifilm Holdings Corp said on Monday it was expanding the production of its Avigan anti-influenza drug to reach an additional number of Ebola patients. France and Guinea plan to conduct clinical trials of Avigan 200 mg tablets, made by Fujifilm group company Toyama Chemical Co, in Guinea to treat Ebola in mid-November, Fujifilm said in a statement. (Photo by Issei Kato/Reuters)

A city council security guard photographs a piece of street art attributed to Banksy titled “The Girl with the Pierced Eardrum” after it was defaced in an alleyway in Bristol, western England, October 22, 2014. (Photo by Andrew Winning/Reuters)

Ana Ivanovic of Serbia celebrates her win over Eugenie Bouchard of Canada during their WTA Finals singles tennis match at the Singapore Indoor Stadium October 22, 2014. (Photo by Edgar Su/Reuters)

A demonstrator with banners sits on the ground during a protest on the second day of a nationwide student strike against rising fees and educational cuts in Madrid, October 22, 2014. Banner reads “To educate Slaves?”. (Photo by Andrea Comas/Reuters)

A man takes a selfie with protesting students standing behind a barricade blocking the entrance to Madrid's Complutense University on the second day of a nationwide student strike against rising fees and educational cuts, October 22, 2014. (Photo by Susana Vera/Reuters)

French riot policemen force out migrants who were hidden in a lorry which makes its way to the ferry terminal in Calais October 22, 2014. Britain and France have agreed to improve border controls and cooperate more closely in an effort to control a growing number of illegal immigrants trying to cross the English Channel from the French port city of Calais to Britain. French officials estimated in September the number of illegal immigrants in Calais at 1,500, up by 50 percent in the past year, their numbers boosted by conflict in the Middle East and north Africa. (Photo by Pascal Rossignol/Reuters)

A Christian pilgrim dips in the water at the baptismal site known as Qasr el-Yahud on the banks of the Jordan River, which also acts as a border line near the West Bank city of Jericho October 22, 2014. With attacks by Hezbollah from Lebanon, the threat from Islamic State and the Nusra Front in Syria and growing unrest in Egypt's Sinai, the north and south of Israel?s borders are on edge. By comparison, the eastern frontier with Jordan looks like an oasis of calm. Yet the Hashemite kingdom, wedged between Iraq, Syria and Saudi Arabia as well as Israel and the Israeli-occupied West Bank, is tackling an array of destabilising problems that its allies – in particular Israel – are watching warily. (Photo by Baz Ratner/Reuters)

A man dressed as famous Mexican Lucha Libre wrestler El Santo kicks a police fence during a demonstration to demand information for the 43 missing students of the Ayotzinapa teachers' training college, outside Mexico's embassy in Buenos Aires October 22, 2014. The students went missing in Iguala, in the southwestern state of Guerrero on September 26 after clashing with police and masked men, and dozens of police have been arrested in connection with the case – which has sent shockwaves across Mexico. Authorities say many of the missing students were abducted by police. (Photo by Marcos Brindicci/Reuters)

An activist throws a chair towards a window at the Municipal Palace during a demonstration to demand information for the 43 missing students of the Ayotzinapa teachers' training college, in Iguala, the southern Mexican state of Guerrero, October 22, 2014. (Photo by Jorge Dan Lopez/Reuters)

A boy crawls under a cow during a religious ceremony celebrating the Tihar festival, also called Diwali, in Kathmandu, October 23, 2014. Hindus all over Nepal are celebrating the festival during which they worship cows, which are considered a maternal figure, and other animals. Also known as the festival of lights, devotees worship the goddess of wealth Laxmi by illuminating and decorating their homes using garlands, oil lamps, candles and colourful light bulbs. (Photo by Navesh Chitrakar/Reuters)

A devotee is kicked in the face as she crawls under a cow during a religious ceremony in Kathmandu, October 23, 2014. (Photo by Navesh Chitrakar/Reuters)

Russian artist Yelena Zelenskaya displays pies she baked that look like North Korean leader Kim Jong Un, U.S. president Barack Obama, and German Chancellor Angela Merkel, prepared for the art performance titled, “Sweet Sanctions. Let's eat each other only for fun” in Krasnoyarsk, Siberia, October 23, 2014. A group of local artists took part in the performance at the Krasnoyarsk Museum Centre, where the pies represented three human races and continents and was held to oppose war, racism, and confrontation of cultures, according to organizers. (Photo by Ilya Naymushin/Reuters)

Participants drink tea and eat cakes made to look like U.S. president Barack Obama, North Korean leader Kim Jong Un and German Chancellor Angela Merkel during the art performance titled, “Sweet Sanctions. Let's eat each other only for fun” in Krasnoyarsk, Siberia, October 23, 2014. (Photo by Ilya Naymushin/Reuters)

Girls play flutes as part of the Newari New Year parade that falls during the Tihar festival, also called Diwali, in Kathmandu October 24, 2014. The Newar community observes the start of their Newari New Year 1134, in accordance with their lunar calendar, by worshipping their spiritual selves in a ritual known as “mahapuja”. (Photo by Navesh Chitrakar/Reuters)

A masked dancer performs to drumbeat during the Newari New Year parade that falls during the Tihar festival, also called Diwali, in Kathmandu October 24, 2014. (Photo by Navesh Chitrakar/Reuters)

Women, in traditional attire, play instruments during the Newari New Year parade that falls during the Tihar festival, also called Diwali, in Kathmandu October 24, 2014. (Photo by Navesh Chitrakar/Reuters)