Refugees prepare themselves before heading towards the border with Serbia, at the transit center for refugees near northern Macedonian village of Tabanovce, Thursday, January 28, 2016. Macedonia allows in migrants whom it deems to be bona fide refugees – Syrian, Iraqi and Afghan nationals. All others are considered economic migrants and left trapped in Greece, where they are told to seek asylum, agree to voluntary repatriation or be deported. (Photo by Boris Grdanoski/AP Photo)





An Andean woman in traditional dress, applies mascara before the carnival in Ayacucho, Peru, Thursday, January 28, 2016. The carnival in the Andean region of Peru begins at the same the time farmers plant their crops. (Photo by Martin Mejia/AP Photo)





A man washes his hands in a puddle in Port-au-Prince, Haiti, January 27, 2016. Zika outbreaks have been reported in Haiti. The virus is spread by the Aedes aegypti mosquito, which is notoriously adaptive. The insect thrives in puddles, nooks and crannies common in tropical cities peppered with chaotic and unplanned neighbourhoods, where rainwater, open sewers and litter offer ample habitat. (Photo by Andres Martinez Casares/Reuters)





Protesters carry signs depicting Argentine President Mauricio Macri that read “Freedom for Milagro Sala” (L) and “Down the anti-terrorism law” during a march to show solidarity for social leader Milagro Sala in Buenos Aires, Argentina, January, 27, 2016. Sala, the president of Tupac Amaru Neighbourhood Association, was imprisoned in the northwestern Argentine province of Jujuy on January 16, 2016 on charges of public disturbance and inciting crimes. (Photo by Enrique Marcarian/Reuters)





A worker dyes silk in central Bangkok, Thailand, January 25, 2016. (Photo by Athit Perawongmetha/Reuters)





Serena Williams of the U.S. celebrates after winning her semi-final match against Poland's Agnieszka Radwanska at the Australian Open tennis tournament at Melbourne Park, Australia, January 28, 2016. (Photo by Jason O'Brien/Reuters/Action Images)





Angelique Kerber of Germany celebrates after defeating Johanna Konta of Britain in their semifinal match at the Australian Open tennis championships in Melbourne, Australia, Thursday, January 28, 2016. (Photo by Vincent Thian/AP Photo)





A barge carries coal on the Batang Hari River in Jambi province, Sumatra, Indonesia January 27, 2016 in this photo taken by Antara Foto. (Photo by Wahdi Septiawan/Reuters/Antara Foto)





South Korean and U.S. Marines participate in a winter military drill in Pyeongchang, South Korea, January 28, 2016. (Photo by Kim Hong-Ji/Reuters)





Migrants sleep covered with blankets as they wait to cross the Greek-Macedonian border near the village of Idomeni, Greece, January 28, 2016. (Photo by Alexandros Avramidis/Reuters)





A lion sculpture installed by National Geographic Wild to highlight the threat to endangered big cats, stands in Trafalgar Square in London, Britain January 28, 2016. National Geographic installed the sculpture alongside Trafalgar Square's famous lion statues to promote it's week of programming on big cats. (Photo by Stefan Wermuth/Reuters)





A pedestrian photographs a lion sculpture installed by National Geographic Wild to highlight the threat to endangered big cats, in Trafalgar Square in London, Britain January 28, 2016. (Photo by Stefan Wermuth/Reuters)





An employee shows the front of the silver 20 Swiss Francs Gottardo 2016 official commemorative coin at Swissmint in Bern, Switzerland January 28, 2016. Crossing the Alps, the world's longest train tunnel should become operational at the end of 2016, consisting of two parallel single track tunnels, each of a length of 57 km. (Photo by Ruben Sprich/Reuters)





Special combat police conducting an exercise to repel militant attacks enter a classroom at Elizabeth High School in Peshawar, Pakistan January 28, 2016. (Photo by Fayaz Aziz/Reuters)





A prototype of the first Japan-made stealth fighter is pictured at a Mitsubishi Heavy Industries' factory in Toyoyama town, Aichi Prefecture, central Japan, in this photo taken by Kyodo January 28, 2016. (Photo by Reuters/Kyodo News)





A female soldier of the German armed forces Bundeswehr guard of honour (Wachbatallion) is pictured at the Defence Ministry in Berlin, Germany, January 28, 2016. (Photo by Fabrizio Bensch/Reuters)





Woman wait to collect water in the drought stricken Somali region in Ethiopia, January 26, 2016. The drought relief effort in Ethiopia needs about $500 million to fund programmes beyond the end of April to support 10.2 million people facing critical food shortages this year, the U.N. World Food Programme said on Thursday. (Photo by Tiksa Negeri/Reuters)





Iraqi soldiers from the army's 72nd infantry brigade participate in a live ammunition training exercise with U.S.-led Coalition trainers at Besmaya military base in south of Baghdad, Iraq, January 27, 2016. U.S.-led coalition forces training Iraqi soldiers to fight Islamic State are applying lessons from last month's recapture of Ramadi to prepare the army to retake the northern city of Mosul later this year. (Photo by Thaier Al-Sudani/Reuters)





Firefighters, with their bodies covered in fake blood, take part in a protest to demand better working conditions outside regional parliament in Oviedo, northern Spain, January 28, 2016. (Photo by Eloy Alonso/Reuters)





A NATO AWACS (Airborne Warning and Control Systems) aircraft is seen taking-off for a flight to Romania from the AWACS air base in Geilenkirchen, near the German-Dutch border in this April 16, 2014 file photo. The head of NATO said on January 28th, 2016 that the United States has requested the alliance's help in fighting Islamic State in the Middle East by providing surveillance planes called the Airborne Warning and Control System (AWACS). (Photo by Francois Lenoir/Reuters)





A construction worker stands in front of a piece of street art portraying prospective U.S. Presidential candidate Donald Trump, in east London, January 28, 2016. An online petition to bar Trump from entering the United Kingdom recently triggered a debate in Parliament after if was signed by over 500,000 people. (Photo by Andrew Winning/Reuters)





Italian Policewomen stand guard before the futsal match between Sporting Locri and Lazio in Locri, Italy January 10, 2016. (Photo by Tony Gentile/Reuters)





North Korean leader Kim Jong Un provides field guidance to the Kim Jong Suk Pyongyang Textile Mill, in this undated file photo released by North Korea's Korean Central News Agency (KCNA) in Pyongyang on January 28, 2016. (Photo by Reuters/KCNA)





People walk over a portrait of Iran's President Hassan Rouhani as they take part in a protest against his visit to France in central Paris, France, January 28, 2016. (Photo by Jacky Naegelen/Reuters)





Fire fighters try to extinguish fire at the site of a suicide car bombing outside the Yemeni President Abd-Rabbu Mansour Rabbu Hadi's residence in the southern city of Aden, January 28, 2016. (Photo by Reuters/Stringer)





A large poster of U.S. Republican presidential candidate Donald Trump is displayed in a residential neighborhood in West Des Moines, Iowa January 28, 2016. (Photo by Brian Snyder/Reuters)





A French gendarme reacts as French livestock farmers burn tyres to protest falling prices near on a road in Tinteniac, western France, January 28, 2016. (Photo by Stephane Mahe/Reuters)





Potash Corp underground production supervisor Dave Esslinger displays a sample of potash 1000 metres (3280 feet) below surface at the potash mine in Rocanville, Saskatchewan in a September 30, 2010 file photo. Potash Corp of Saskatchewan forecast its bleakest year in a decade and slashed its quarterly dividend, due to tanking fertilizer prices. (Photo by David Stobbe/Reuters)





Genetically modified male Aedes aegypti mosquitoes are released in a neighborhood in the city of Piracicaba, Brazil, January 28, 2016. Oxitec, the UK subsidiary of U.S. synthetic biology company Intrexon, hopes to deploy a self-limiting genetically modified strain of insects to compete with normal Aedes aegypti. (Photo by Paulo Whitaker/Reuters)





A woman dumps trash at the Oriental market in Managua, Nicaragua January 28, 2016. Nicaraguan government spokeswoman Rosario Murillo announced on Thursday of a new positive case of Zika in Managua city, bringing confirmed cases in the country to three. (Photo by Oswaldo Rivas/Reuters)





A Femen activist, Sarah Constantin, is hanged from a noose-like rope from a Paris bridge to call attention to the large number of executions in Iran as she stages a protest against visiting Iranian President Hassan Rouhani in Paris, Thursday, January 28, 2016. A near-naked woman hanging from a noose-like rope from a Paris bridge has sent a message to visiting Iranian President Hassan Rouhani. (Photo by Zacharie Scheurer/AP Photo)





A police officer shoots with dummy ammunition during a training operation of the new BFE+ (Evidence and Arrestment) unit of the German federal police in Ahrensfelde near Berlin, Germany, Thursday, January 28, 2016. German President Joachim Gauck and German Interior Minister Thomas de Maiziere visited the unit on Thursday. (Photo by Michael Sohn/AP Photo)





A Cambodian woman prepares rice for sale at a market in Phnom Penh, Cambodia, 28 January 2016. According to local media report Cambodian private rice exporting companies exported 538,396 tons of milled rice in 2015 as their goal to export one million tons of milled rice per year. (Photo by Tep Sony/EPA)





A picture made available on 28 January 2016 of Buddhist monk statues on sale dressed in warm, woolly orange knitted caps, in a shopping center in Bangkok, Thailand, 27 January 2016. At least fourteen people have died in Thailand from a cold snap that has plagued the tropical country since 25 January, that forced some provincial authorities to close schools. In northern Nan province, classes at some schools located in mountainous areas were suspended until today, when temperatures rose again to more normal levels, as a precautionary measure. In Nan, which typically has hot and dry winters with temperatures hovering near 37 degrees Celsius (98.6 degrees Fahrenheit), temperatures fell below 10 degrees Celsius (50 degrees Fahrenheit) 27 January. The unusual temperatures across North, South and even Southeast Asia, killing at least 91 people and which left many countries the coldest that they have been in decades, have been attributed to a cold wave coming from China. (Photo by Barbara Walton/EPA)





Backdropped of the illuminated Castle Hill and the Chain Bridge, people light candles in front of the cast iron shoes Holocaust Memorial on the quay of the River Danube during a commemoration marking the International Holocaust Remembrance Day in Budapest, Hungary, 27 January 2016. International Holocaust Remembrance Day marks the liberation of Auschwitz-Birkenau nazi concentration camp by Soviet troops on 27 January 1945. (Photo by Balazs Mohai/EPA)





Models present creations from the Spring/Summer 2016 Haute Couture collection by French designer Franck Sorbier during the Paris Fashion Week, in Paris, France, 27 January 2016. The presentation of the Haute Couture collections runs from 24 to 28 January. (Photo by Yoan Valat/EPA)





Extras wearing dark clothing and lit visors, so-called “Players” (2011), walk across an exhibition room as part of the installation “Orphan Patterns” by French artist Pierre Huyghe at the Sprengel Museum in Hanover, Germany, 28 January 2016. Huyghe will be awarded the Kurt Schwitters Prize 2015, sponsored by Lower Saxony's Sparkassen Foundation. (Photo by Holger Hollemann/EPA)





Actress Kerry Washington, Harvard University's Hasty Pudding Theatricals' Woman of the Year, is kissed by actors in drag, Robert Fitzpatrick, left, and David Sheynberg, right, as she is paraded through the streets of Harvard Square, Thursday, January 28, 2016, in Cambridge, Mass. (Photo by Elise Amendola/AP Photo)





This picture taken on January 26, 2016 shows monkeys being led for a walk by their trainers at a monkey training school in a zoo in Dongying, eastern China's Shandong province. A dozen monkeys are being trained at the school as part of festivities for the upcoming Year of the Monkey which begins on February 8. (Photo by Wang Zhao/AFP Photo)





An Indian classical dancer poses next to newly restored vintage cars ahead of their car rally organized by the 21 Gun Salute in New Delhi, India, Thursday, January 28, 2016. The 21 Gun Salute organizes an annual vintage car rally which will be held on Feb. 6 and 7, where more than 100 hand-picked vintage and classic cars will participate. (Photo by Altaf Qadri/AP Photo)





A hard-currency mortgage holder wears a face mask showing a dollar sign and reading Plague during a protest at a bank in Moscow, Russia, Thursday, January 28, 2016. Russians who took out mortgages denominated in a foreign currency are protesting at their banks to demand that the loans be restructured. They chose foreign currency mortgages years ago to take advantage of lower interest rates abroad, but when Russia's currency collapsed, the cost of repaying those mortgages skyrocketed. (Photo by Ivan Sekretarev/AP Photo)