A Pakistani army helicopter lands in Bacha Khan University in Charsadda town, some 35 kilometers (21 miles) outside the city of Peshawar, Pakistan, Wednesday, January 20, 2016. Gunmen stormed Bacha Khan University named after the founder of an anti-Taliban political party in the country's northwest Wednesday, killing many people, officials said. (Photo by Mohammad Sajjad/AP Photo)





Staff of the Bacha Khan University leave the campus in Charsadda town, some 35 kilometers (21 miles) outside the city of Peshawar, Pakistan, Wednesday, January 20, 2016. (Photo by Mohammad Sajjad/AP Photo)





Pakistani army soldiers rescue people from Bacha Khan university following an attack by militants in Charsadda, about 50 kilometres from Peshawar, on January 20, 2016. At least 21 people died in an armed assault on a university in Pakistan on January 20, where witnesses reported two large explosions as security forces moved in under dense fog to halt the bloodshed. (Photo by A. Majeed/AFP Photo)





An Afghan driver is seen through the shattered windshield of a car at the site of a suicide attack near the Russian embassy in Kabul, Afghanistan, Wednesday, January 20, 2016. A suicide car bomb attack close to the Russian embassy in the capital, Kabul, has killed many people and wounded more than a dozen, an Afghan official said Wednesday. (Photo by Rahmat Gul/AP Photo)





Latvians gather at a bonfire marking the 25th anniversary of a Soviet crackdown on pro-independence protesters, at the Parliament building, in Riga, Latvia, Wednesday, January 20, 2016. Latvia marked the 25th anniversary of a Soviet crackdown as the country strived for independence. (Photo by Roman Koksarov/F64 via AP Photo)





Artists perform during the gala of the 40th Monte-Carlo International Circus Festival in Monaco January 19, 2016. (Photo by Valery Hache/Reuters/Pool)





Artists perform during the gala of the 40th Monte-Carlo International Circus Festival in Monaco, 19 January 2016. (Photo by Valery Hache/EPA)





Housh ma Housh, Fumagalli and Bello Nock perform during the gala of the 40th Monte-Carlo International Circus Festival in Monaco January 19, 2016. (Photo by Valery Hache/Reuters/Pool)





Former Alaska Gov. Sarah Palin (L) points to U.S. Republican presidential candidate Donald Trump (R) as she speaks after endorsing him for President at a rally at Iowa State University in Ames, Iowa January 19, 2016. (Photo by Mark Kauzlarich/Reuters)





Contestants lie on artificial snow during a cold enduring competition in temperature of negative 6 degrees Celsius (21.2 degrees Fahrenheit), at an indoor ski resort in Changsha, Hunan province, January 19, 2016. (Photo by Reuters/China Daily)





A woman talking on the phone walks past an electronic board of the Korea Composite Stock Price Index (KOSPI) at the Korea Exchange (KRX) in Seoul, South Korea, January 20, 2016. (Photo by Kim Hong-Ji/Reuters)





Iraqi security forces stand with an Islamic State flag which they pulled down in the city of Ramadi, January 19, 2016. (Photo by Reuters/Stringer)





Kazakhstan's Yulia Putintseva celebrates a point during her second round match against China's Han Xinyun at the Australian Open tennis tournament at Melbourne Park, Australia, January 20, 2016. (Photo by Brandon Malone/Reuters)





Australia's Daria Gavrilova kisses her racquet during her second round match against Czech Republic's Petra Kvitova at the Australian Open tennis tournament at Melbourne Park, Australia, January 20, 2016. (Photo by Issei Kato/Reuters)





Russia's Maria Sharapova takes a selfie using a spectator's phone after winning her second round match against Belarus' Aliaksandra Sasnovich at the Australian Open tennis tournament at Melbourne Park, Australia, January 20, 2016. (Photo by Thomas Peter/Reuters)





Russia's Margarita Gasparyan celebrates after winning her second round match against Japan's Kurumi Nara at the Australian Open tennis tournament at Melbourne Park, Australia, January 20, 2016. (Photo by John French/Reuters)





Members of the Indian Border Security Force (BSF) band ride their camels as they take part in the rehearsal for the Republic Day parade in New Delhi, India, January 20, 2016. India celebrates its annual Republic Day on January 26. (Photo by Anindito Mukherjee/Reuters)





An Indian Army officer stands on a vehicle displaying missiles during the rehearsal for the Republic Day parade in New Delhi, India, January 20, 2016. (Photo by Anindito Mukherjee/Reuters)





Swiss special police officers guard the convoy of vehicles transporting Russian Foreign Minister Sergei Lavrov after his arrival in Zurich, Switzerland, January 20, 2016. Lavrov was on his way to meet U.S. Secretary of State John Kerry. (Photo by Arnd Wiegmann/Reuters)





U.S. Secretary of State John Kerry and Russian Foreign Minister Sergey Lavrov walk to their seats for a meeting about Syria, in Zurich, Switzerland, January 20, 2016. (Photo by Jacquelyn Martin/Reuters/Pool)





Attendees use their mobile device during the annual meeting of the World Economic Forum (WEF) in Davos, Switzerland January 20, 2016. (Photo by Ruben Sprich/Reuters)





A member of the Somali military performs a defensive drill after attending a commando training exercise at the United Arab Emirates military training camp in the capital Mogadishu, Somalia January 20, 2016. (Photo by Feisal Omar/Reuters)





Statues, including North Korea's founder Kim Il Sung (3rd L) and his son Kim Jong Il (3rd R), are exhibited during a visit by North Korean leader Kim Jong Un (not pictured) at the newly built Youth Movement Museum in this undated photo released by North Korea's Korean Central News Agency (KCNA) in Pyongyang January 20, 2015. (Photo by Reuters/KCNA)





A man carries an outboard motor which he found and recovered from the seabed in Rio Caribe, a town near caribbean islands, in the eastern state of Sucre, Venezuela October 29, 2015. Driven by a deepening economic crisis, smuggling across Venezuela's land and maritime borders – as well as illicit domestic trading – has accelerated to unprecedented levels and is transforming society. Although smuggling has a centuries-old history here, the socialist government's generous subsidies and a currency collapse have given it a dramatic new impetus. (Photo by Carlos Garcia Rawlins/Reuters)





A woman practices yoga at the India stand during the International Tourism Trade Fair FITUR at Ifema on January 20, 2016 in Madrid, Spain. (Photo by Carlos Alvarez/Getty Images)





A woman gets her hand painted with henna at the India stand at the FITUR international tourism trade fair in Madrid, Spain, January 20, 2016. (Photo by Andrea Comas/Reuters)





A Cuban man roles a cigar at the FITUR international tourism trade fair in Madrid, Spain, January 20, 2016. (Photo by Andrea Comas/Reuters)





A woman in a costume stands in the Asia area of the FITUR International Tourism Trade Fair in Madrid, Spain, January 20, 2016. (Photo by Andrea Comas/Reuters)





A woman has her picture taken in the Africa area at the FITUR international tourism trade fair which opened in Madrid, Spain, January 20, 2016. (Photo by Andrea Comas/Reuters)





A man performs a dance in the Africa area at the FITUR international tourism trade fair which opened in Madrid, Spain, January 20, 2016. (Photo by Andrea Comas/Reuters)





Farmers stand next to tractors during a demonstration of Greek farmers against planned pension reforms, next to the main motorway linking Athens to the north of the country, in Tempi, near the city of Larissa in central Greece, January 20, 2015. (Photo by Alexandros Avramidis/Reuters)





Jordan's Queen Rania attends the session “The Humanitarian Imperative: A Global, Regional and Industry Response” during the Annual Meeting 2016 of the World Economic Forum (WEF) in Davos, Switzerland January 20, 2016. (Photo by Ruben Sprich/Reuters)





The dancing lights of the Aurora Borealis is shown over the Pacific northwest taken from the International Space Station by astronaut Scott Kelly in this handout provided by NASA, January 20, 2016. (Photo by Scott Kelly/Reuters/ESA/NASA)





Professor of Planetary Astronomy Mike Brown speaks in front of a computer simulation of the probable orbit of Planet Nine (yellow) at the California Institute of Technology in Pasadena, California January 20, 2016. The solar system may host a ninth planet that is about 10 times bigger than Earth and orbiting far beyond Neptune, according to research published on Wednesday. (Photo by Mario Anzuoni/Reuters)





This artistic rendering provided by California Institute of Technology shows the distant view from Planet Nine back towards the sun. The planet is thought to be gaseous, similar to Uranus and Neptune. Hypothetical lightning lights up the night side. Scientists reported Wednesday, January 20, 2016, they finally have “good evidence” for Planet X, a true ninth planet on the fringes of our solar system. (Photo by R. Hurt/Infrared Processing and Analysis Center/Courtesy of California Institute of Technology via AP Photo)





A tourist takes pictures of sea lions after they swam up onto the beach to lay in the sun in La Jolla, California January 20, 2016. (Photo by Mike Blake/Reuters)





A man fills a disposable plastic bottle with sand at the Developmental Association of Renewable Energies' project site in Sabon Yelwa near Jaji, on the outskirts of Nigeria's northern city of Kaduna January 20, 2016. (Photo by Akintunde Akinleye/Reuters)





Men work outside an uncompleted mud house built with disposable plastic bottles at the Developmental Association of Renewable Energies' project site in Sabon Yelwa near Jaji, on the outskirts of Nigeria's northern city of Kaduna January 20, 2016. (Photo by Akintunde Akinleye/Reuters)





A worker sets up an advertisement at an underpass in Tokyo, Wednesday, January 20, 2016. (Photo by Eugene Hoshiko/AP Photo)





A police officer helps a child that was overcome by teargas during a protest against President Michel Martelly's government to demand the cancellation of the January 24, elections, in Port-au-Prince, Haiti, Tuesday, January 19, 2016. Disputed election results have brought paralyzing street protests and many broad accusations of electoral fraud from civil society and opposition groups. (Photo by Dieu Nalio Chery/AP Photo)





A woman puts a Mariachi Hat on a figure of Pope Francis at a store of the Basilica of Guadalupe Church in Mexico City, Mexico, 19 January 2016. Pope Francis will visit Mexico from 12 to 17 February. (Photo by Mario Guzman/EPA)





A demonstrator holds a banner with the shape of the Brazilian flag during a protest against the fare hike on public transportation in in Sao Paulo, Brazil, Tuesday, January 19, 2016. The protest was organized by the Free Fare Movement, the same group that initiated mass anti-government demonstrations that filled streets across Brazil in 2013, after Sao Paulo Mayor Fernando Haddad raised bus fares from 3.50 reals to 3.80 reals. (Photo by Andre Penner/AP Photo)





Dancers pose after performing “El Macho Raton”, “El Toro Huaco” and “El Gueguense” traditional dances during San Sebastian festivity in Diriamba, province of Carazo, some 50 km south of Managua on January 19, 2016. Devotees of Saint Sebastian dance in traditional costumes between the cities of Diriamba and Dolores, which are some three kilometers away. (Photo by Inti Ocon/AFP Photo)





This image made from Associated Press Television News video shows an aerial view of the frozen Taedong River in Pyongyang, North Korea, on Wednesday, January 20, 2015. The depths of winter have hit North Korea, with temperatures dropping lower than last year. (Photo by Associated Press Television News via AP Photo)





In this August 2012 photo provided by Marta Mirazon Lahr, researcher Frances Rivera, right, Michael Emsugut, left, and Tot Ekulukum excavate a human skeleton at the site of Nataruk, West Turkana, Kenya. This skeleton was that of a woman, found lying on her back, with lesions on her neck vertebrae consistent with a projectile wound. She also had multiple fractures on one of her hands. Writing in a paper released Wednesday, January 20, 2016, by the journal Nature, scientists said it's one of the clearest cases of violence between groups among prehistoric hunter-gatherers. (Photo by Marta Mirazon Lahr via AP Photo)





A handout photo provided by Nature on January 19, 2016 shows a detail of the skull of skeleton KNM-WT 71255 in situ. This skeleton was that of a man, found lying prone in the lagoon's sediments. The skull has multiple lesions on the front and on the left side, consistent with woundsfrom a blunt implement, such as a club. About 10,000 years ago, a small band of prehistoric men, women and children were captured by a rival clan and executed – tied up, shot with arrows, and beaten to death. Their shattered remains fell into a lagoon, and were preserved in sediment for millennia, only now to emerge as proof of the oldest known human massacre. Unearthed at Nataruk, near Kenya's Lake Turkana, the battered bones provide “conclusive evidence of something that must have been an intergroup conflict”, Cambridge University anthropologist Marta Mirazon Lahr explained. (Photo by Marta Mirazon Lahr and Fabio Lahr/AFP Photo/Nature)





Ducks huddle in a park in Warsaw, Poland, Wednesday January 20, 2016, as snow and a deep freeze have settled over Central Europe. Temperatures fell to minus 6 Celsius (21 Fahrenheit) in Warsaw on Wednesday. (Photo by Czarek Sokolowski/AP Photo)





A Syrian woman with her children takes a shelter in a iron box during a rainfall, after they arrived from Turkey to the Greek deserted island of Pasas near Chios on Wednesday, January 20, 2016 . Thousand of migrants and refugees continue to reach Greece's shores despite the winter weather. (Photo by Petros Giannakouris/AP Photo)





Young migrants get warm around a brazier in the migrants camp of Grande-Synthe, near Dunkirk, on January 20, 2016, where almost some 2,500 migrants and refugees live, mostly Iraqi Kurds and Syryans. Authorities in the northern French port of Calais were struggling to move hundreds of migrants into refitted shipping containers ahead of plans to bulldoze part of the notorious “Jungle” camp. There wre also attempts to relocate 2,500 migrants camped some 40 kilometres (25 miles) up the road from Calais in Grande-Synthe. (Photo by Philippe Huguen/AFP Photo)





Kashmiri Muslims watch the funeral procession of Shariq Ahmad Bhat, a suspected rebel, in Bandnu village, some 52 kilometers (33 miles) south of Srinagar, Indian controlled Kashmir, Wednesday, January 20, 2016. Bhat was killed in a gunbattle with Indian government forces Wednesday. (Photo by Dar Yasin/AP Photo)





Pakistani students look at a pool of blood following an attack at Bacha Khan University in Charsadda town, some 35 kilometers (21 miles) outside the city of Peshawar, Pakistan, Wednesday, January 20, 2016. Gunmen stormed Bacha Khan University named after the founder of an anti-Taliban political party in the country's northwest Wednesday, killing many people, officials said. (Photo by Mohammad Sajjad/AP Photo)





A woman searches for food in a trash bin in front of a board listing foreign currency rates against the Russian ruble in central Moscow, Russia, 20 January 2016. Russia's ruble currency fell to a record low versus the US dollar on 20 January as prices for the country's main export, oil, continued to tumble. The ruble slipped past the mark of 80.1 per US dollar in intraday trading, surpassing the previous record set in December 2014, according to a post on the Moscow Exchange bourse's website. Falling oil prices have the potential to jeopardize Russia's stability by severely weakening its economy. (Photo by Yuri Kochetkov/EPA)





Israeli border policemen stand guard during the demolition of a house owned by the Palestinian Salem Abu Ayyash in the West Bank town of Dura, south of Hebron, 20 January 2016. Israel claims the home was built without the necessary permits which is located in area an under the Israeli adminstrative control. (Photo by Abed Al Hashlamoun/EPA)





A participant tries out virtual reality glasses while watching the world premiere of the virtual reality film “Collisions” inside the Congress Center the first day of the 46th Annual Meeting of the World Economic Forum, WEF, in Davos, Switzerland, 20 January 2016. The overarching theme of the Meeting, which will take place from 20 to 23 January, is “Mastering the Fourth Industrial Revolution”. (Photo by Laurent Gillieron/EPA)





HUBO, a multifunctional walking humanoid robot performs a demonstration of its capacities next to its developer Oh Jun-Ho, Professor at the Korea Advanced Institute of Science and Technology (KAIST) during the annual meeting of the World Economic Forum (WEF) in Davos, Switzerland January 20, 2016. (Photo by Ruben Sprich/Reuters)





Filipino police senior inspector Rodeliza Naoy (3-R) stands guard after getting hit by a paint bomb during a lightning rally against the legality of the Enhanced Defense Cooperation Agreement (EDCA) in front of the US Embassy in Manila, Philippines, 20 January 2016. An agreement allowing the increased presence of US military forces for training in the Philippines is constitutional, the South-East Asian country's Supreme Court decided. The decision came amid increasing tension between China and the Philippines over a territorial row in the South China Sea. Under the agreement, the US will be allowed to build structures, store as well as position weapons, defence supplies and material, and station troops, civilian personnel and defence contractors. The 10-year deal also allows the US military to transit and station vehicles, vessels and aircraft in the Philippines, which used to host two US bases before they were evicted in 1992. (Photo by Mark R. Cristino/EPA)





Indian transgender driver Sanjeevani Chavan poses for photographs inside the Wings travels taxi, in Mumbai, India, 20 January 2016. According to reports, Wings Travels Management announced the launch of India's first ever Radio Cab Services powered by the LGBT (Lesbian, Gay, Bisexual and Transgender) community, a unique enpowerment intiative in association with the Humsafar Trust. (Photo by Divyakant Solanki/EPA)





Indian transgender drivers Sanjeevani Chavan (R) and Sarika Pawar (L) pose for photographs with the Wings travels taxi outside the Chhatrapati Shivaji Terminus railway station, in Mumbai, India, 20 January 2016. (Photo by Divyakant Solanki/EPA)





Visitors view ice sculptures at Yanqing Ice Festival on January 19, 2016 in Beijing, China. Chinese cities Beijing and Zhangjiakou won the bid to host the 2022 Winter Olympic Games on July 31, 2015 in Kuala Lumpur. (Photo by Lintao Zhang/Getty Images)





Members of Special Weapons and Tactics team (SWAT) who are employees of Lotte Group, take part in an anti-terror drill at the Lotte Hotel on January 20, 2016 in Seoul, South Korea. The drill comes amid international concerns about terrorism. (Photo by Chung Sung-Jun/Getty Images)





Couples stand on the robot moving forward during a group wedding ceremony at a robot factory on January 20, 2016 in Shenyang, Liaoning Province of China. Various types of robot served a five-couple group wedding at a robot factory on Wednesday in Shenyang. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)





A woman leaps from a narrowboat moored on the frozen Kennet and Avon canal at Bathampton on January 20, 2016 in Bath, England. Many parts of the UK experienced subzero temperatures last night with the Met Office saying that the lowest temperatures recorded in England were –8C in Berkshire. (Photo by Matt Cardy/Getty Images)





A man jumps over the fire while perform a voodoo ceremony prior a protest for the streets of Port-au-Prince, on January 19, 2016. Demonstrators are protesting against the presidential run-off and to demand a transitional government, denouncing fraud in the first round of presidential elections held October 25. The second round of presidential elections is scheduled for January 24 between ruling party candidate Jovenel Moise and Jude Celestin. Celestin has said he does not want to participate in the January 24th run-off against ruling party candidate Jovenel Moise, has yet to submit his official resignation to the Provisional Electoral Council(CEP). (Photo by Hector Retamal/AFP Photo)





People walk past a black star and the title of the track “Let's Dance” that has been carved on the ice of a pond on January 20, 2016 as a tributes to the late British music icon David Bowie near his former home in Berlin's Schoeneberg neighbourhood. (Photo by Odd Andersen/AFP Photo)





This combination of two satellite images provided by DigitalGlobe, taken on March 31, 2011, top, and September 28, 2014, shows the site of the 1,400-year-old Christian monastery known as St. Elijah's, or Dair Mar Elia, on the outskirts of Mosul, Iraq. These satellite photos obtained by The Associated Press in January 2016 confirm what church leaders and Middle East preservationists had feared: The monastery has been reduced to a field of rubble, yet another victim of the Islamic State's relentless destruction. (Photo by DigitalGlobe via AP Photo)





An old “Tamborillero'” wearing his uniform marchs in the traditional “La Tamborrada'” the big day or “El Dia Grande”, the main day of San Sebastian feasts, in the Basque city of San Sebastian, northern Spain, Wednesday January 20, 2016. From midnight to midnight companies of perfectly uniformed marchers parade through the streets of San Sebastian playing drums and barrels in honor of their patron saint. (Photo by Alvaro Barrientos/AP Photo)





“Tamborilleros” wearing their uniforms participate in the opening ceremony of the main day of San Sebastian feasts at midnight in the Basque city of San Sebastian, northern Spain, Wednesday, January 20, 2016. (Photo by Alvaro Barrientos/AP Photo)





“Tamborilleros” wearing their uniforms take part in the opening ceremony of the main day of the traditional “La Tamborrada” of San Sebastian feasts in the Basque city of San Sebastian, northern Spain, Wednesday, January 20, 2016. (Photo by Alvaro Barrientos/AP Photo)





In this Tuesday, January 19, 2016, photo, vehicles drive past a sign marking the 12th Congress of the Communist Party of Vietnam in Hanoi, Vietnam. This week, some 1,510 representatives of Vietnam's Communist party gather in the capital to pick the country's new leaders. (Photo by Hau Dinh/AP Photo)





A Filipino vendor displays tiny fish as he sells them at a market in Paranaque city, south of Manila, Philippines, Wednesday, January 20, 2016. According to a new report released by the World Economic Forum (WEF) and the Ellen MacArthur Foundation, oceans are expected to contain more plastics than fish (by weight) by 2050. The 46th Annual Meeting of the World Economic Forum is taking place in Davos, Switzerland with a theme “Mastering the Fourth Industrial Revolution”. (Photo by Francis R. Malasig/EPA)





Indian police women detain an activist of India's opposition Congress party during a protest in Kolkata, India, Wednesday, January 20, 2016. The activists were protesting the death of an Indian student who, along with 4 others, was barred from using some facilities at his university in the southern tech-hub of Hyderabad. The protesters accused Hyderabad University's vice chancellor along with two federal ministers of unfairly demanding punishment for the five lower-caste students after they clashed last year with a group of students supporting the governing Hindu nationalist party. (Photo by Bikas Das/AP Photo)





A salesperson looks out of her fashion accessories shop near Qianmen Street, a popular tourist spot, in Beijing, Wednesday, January 20, 2016. Asian stock prices tumbled Wednesday after the IMF's lower growth forecast added to anxiety over Wall Street turbulence and a weaker Chinese economy. China, the world's second-largest economy, cooled further in the latest quarter, dragging 2015's growth to a 25-year low of 6.9 percent. (Photo by Andy Wong/AP Photo)





An Indian police man throws stones at Kashmiri Muslim protesters as they clash in Naina village some 40 kilometers (25 miles) south of Srinagar, Indian controlled Kashmir, Wednesday, January 20, 2016. Violent clashes between police and protesters erupted Wednesday in Indian-controlled Kashmir, leaving a man dead and two others wounded, officials said. (Photo by Dar Yasin/AP Photo)





Two visitors shake hands over the runway prior to the fashion show of designer Dorothee Schumacher during theFashion Week in Berlin, Wednesday, January 20, 2016. The Fall/Winter 2016/2017 collections are presented during the Berlin Fashion Week from Jan. 18 to 22. (Photo by Markus Schreiber/AP Photo)





A model wearing a mask bearing a likeness to US presidential candidate Donald Trump presents a creation during the Fall/Winter 2016/17 Men's collection by Avoc fashion house during the Paris Fashion Week, in Paris, France, 20 January 2016. The presentation of the Men's collections run from 20 to 24 January. (Photo by Ian Langsdon/EPA)





A model wears a creation of designer Anja Gockel during the Fashion Week in Berlin, Wednesday, January 20, 2016. The Fall/Winter 2016/2017 collections are presented during the Berlin Fashion Week from Jan. 18 to 22. (Photo by Markus Schreiber/AP Photo)





A tourist takes photos of a frozen waterfall in Rizhao city, east China's Shandong province, 19 January 2016. Most parts of China will experience a rapid drop in temperatures along with snow and rain in the coming days as a strong cold front is on the way, and will disrupt travel for the upcoming Spring Festival, which falls on Feb. 8 this year. The National Meteorological Center said temperatures will drop sharply in northwestern, northern and northeastern China, with temperatures in some areas down by up to 14 degrees Celsius. (Photo by Imaginechina/Splash News)