epa05735779 US First Lady Melania Trump, US President Donald Trump, US Vice President Mike Pence and his wife Karen Pence wave goodbye to former US President Barack Obama and Former US First Lady Michelle Obama on the West Front of the US Capitol in Washington, DC, USA, 20 January 2017. Trump won the 08 November 2016 election to become the next US President.  EPA/Rob Carr

Rob Carr/EPA

US First Lady Melania Trump, US President Donald Trump, US Vice President Mike Pence and his wife Karen Pence wave goodbye to former US President Barack Obama and Former US First Lady Michelle Obama on the West Front of the US Capitol in Washington, DC. Photo Rob Carr/EPA

British Foreign Secretary Boris Johnson plays a shot during his visit to a cricket academy in Kolkata, India, January 19, 2017. REUTERS/Rupak De Chowdhuri

Rupak De Chowdhuri/Reuters

British Foreign Secretary Boris Johnson plays a shot during his visit to a cricket academy in Kolkata, India. Photo Rupak De Chowdhuri/Reuters

Argentine striker Carlos Tevez, center, is escorted through a crowd of his fans and media upon arriving at the Pudong International Airport in Shanghai on Thursday, Jan. 19, 2017. Shanghai Shenhua has recruited Tevez and has reportedly made the Argentine the highest-paid soccer player in the world. (Chinatopix Via AP)

Chinatopix/AP

Argentinian striker Carlos Tevez, centre, is escorted through a crowd of his fans and media on arrival at Pudong International Airport in Shanghai. Shanghai Shenhua has recruited Tevez and has reportedly made him the highest-paid football player in the world. Photo Chinatopix/AP

British Prime Minister Theresa May enters the room through a curtain to speak on the third day of the annual meeting of the World Economic Forum in Davos, Switzerland, Thursday, Jan. 19, 2017.  (AP Photo/Michel Euler)

Michel Euler/AP

British Prime Minister Theresa May enters the room through a curtain to speak on the third day of the annual meeting of the World Economic Forum in Davos, Switzerland. Photo Michel Euler/AP

TOPSHOT - This handout image received courtesy of Doctors Without Border (MSF) on January 17, 2017, shows a wounded child after an air force jet accidentally bombarded a camp for those displaced by Boko Haram Islamists, in Rann, northeast Nigeria. At least 52 aid workers and civilians were killed on January 17, 2017, when an air force jet accidentally bombed a camp in northeast Nigeria instead of Boko Haram militants, medical charity MSF said. / AFP PHOTO / Médecins sans Frontières (MSF) / Handout / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / DOCTORS WITHOUT BORDERS (MSF)

MSF/AFP

A child lies injured after an air force jet accidentally bombarded a camp for those displaced by Boko Haram Islamists, in Rann, northeast Nigeria according to medical charity MSF. Photo MSF/AFP

Israeli policemen detain a Bedouin man during clashes that followed a protest against home demolitions on January 18, 2017 in the Bedouin village of Umm al-Hiran, which is not recognized by the Israeli government, near the southern city of Beersheba, in the Negev desert. An Israeli policeman was killed while taking part in an operation to demolish homes in the Bedouin village, with authorities claiming he was targeted in a car-ramming attack. The driver was earlier reported shot dead by police as residents disputed the police version of events, saying the driver was heading to the scene to talk with authorities in an attempt to halt the demolitions. / AFP PHOTO / AHMAD GHARABLIAHMAD GHARABLI/AFP/Getty Images

Ahmad Gharabli/AFP/Getty

Israeli policemen detain a Bedouin man during clashes that followed a protest against home demolitions in the Bedouin village of Umm al-Hiran, which is not recognised by the Israeli government, near the southern city of Beersheba, in the Negev desert. Photo Ahmad Gharabli/AFP/Getty

A group of women gather at Knitty City in New York on January 17, 2017 to make their pink Pussyhats in preparation for protests, in Washington and New York, for women's rights following the election of Donald Trump. / AFP PHOTO / William EDWARDSWILLIAM EDWARDS/AFP/Getty Images

William Edwards/AFP/Getty

A group of women gather at Knitty City in New York to make their pink Pussyhats in preparation for protests, in Washington and New York, for women’s rights following the election of Donald Trump. Photo William Edwards/AFP/Getty

Prime Minister Theresa May leaves the room after speaking at Lancaster House in London where she outlined her plans for Brexit, saying that she does not want an outcome which leaves the UK "half in, half out" of the European Union. PRESS ASSOCIATION Photo. Picture date: Tuesday January 17, 2017. See PA story POLITICS Brexit. Photo credit should read: Kirsty Wigglesworth/PA

Kirsty Wigglesworth/PA

Boris Johnson, centre applauds Theresa May as she leaves the room after speaking at Lancaster House in London where she outlined her plans for Brexit. Photo Kirsty Wigglesworth/PA

Serbia's Novak Djokovic makes a backhand return to Spain's Fernando Verdasco during their first round match at the Australian Open tennis championships in Melbourne, Australia, Tuesday, Jan. 17, 2017. (AP Photo/Andy Brownbill)

Andy Brownbill/AP

Serbia’s Novak Djokovic makes a backhand return to Spain’s Fernando Verdasco during their first round match at the Australian Open tennis championships in Melbourne, Australia. Photo Andy Brownbill/AP

The tail of a crashed Turkish Boeing 747 cargo plane lies at a residential area outside Bishkek, Kyrgyzstan Monday, Jan. 16, 2017. The cargo plane crashed Monday morning, killing people in the residential area adjacent to the Manas airport as well as those on the plane. (AP Photo/Vladimir Voronin)

Vladimir Voronin/AP

The tail of a crashed Turkish Boeing 747 cargo plane lies at a residential area outside Bishkek, Kyrgyzstan. The cargo plane crashed Monday morning, killing people in the residential area adjacent to the Manas airport as well as those on the plane. Photo Vladimir Voronin/AP

An Indian man enters a train through an emergency window in Hyderabad, India, Thursday, Jan. 12, 2017. Railway platforms and trains were overcrowded Thursday with many people traveling to their hometowns to celebrate the Hindu festival of Makar Sankranti that falls on Jan. 14. (AP Photo/Mahesh Kumar A.)

Mahesh Kumar/AP

An Indian man enters a train through an emergency window in Hyderabad, India. Railway platforms and trains were overcrowded with many people travelling to their hometowns to celebrate the Hindu festival of Makar Sankranti. Photo Mahesh Kumar/AP

Commuter sit next to a tube sign reading 'Webminster' after Amazon rebranded Westminster tube station as a marketing stunt in central London, Britain January 12, 2017. REUTERS/Stefan Wermuth

Stefan Wermuth/Reuters

Commuter sit next to a tube sign reading ‘Webminster’ after Amazon rebranded Westminster tube station as a marketing stunt in central London today. Photo Stefan Wermuth/Reuters

A municipal worker washes a ceramic reproduction of Spanish artist Pablo Picasso's Guernica, in the Basque town of Guernica, northern Spain, January 12, 2017. This year marks the 80th anniversary of the mural, painted in 1937 following the aerial bombing of the town by German and Italian aviation allied to Nationalist forces led by General Franco. REUTERS/Vincent West

Vincent West/Reuters

A municipal worker washes a ceramic reproduction of Spanish artist Pablo Picasso’s Guernica, in the Basque town of Guernica, northern Spain. This year marks the 80th anniversary of the mural, painted in 1937 following the aerial bombing of the town by German and Italian aviation allied to Nationalist forces led by General Franco. Photo Vincent West/Reuters

A keeper measures a hippo on January 12, 2017 in Hannover zoo.  / AFP PHOTO / dpa / Julian Stratenschulte

Julian Stratenschulte/AFP/Getty

A keeper measures a hippopotamus in Hannover zoo. Photo Julian Stratenschulte/AFP/Getty

U.S. Army soldiers are welcomed in Zagan, Poland, Thursday, Jan. 12, 2017. First U.S. troops arrived at the Zagan base in western Poland as part of deterrence force of some 1,000 troops to be based here and reassure Poland that is worried about Russia's activity.(AP Photo/Czarek Sokolowski)

Czarek Sokolowski/AP

U.S. Army soldiers are welcomed in Zagan, Poland, on Thursday. Photo Czarek Sokolowski/AP

U.S. President-elect Donald Trump (C) smiles as he is applauded by his son Eric Trump (L) daughter Ivanka and son in law Jared Kushner (R) ahead of a press conference in Trump Tower, Manhattan, New York, U.S., January 11, 2017. REUTERS/Shannon Stapleton

Shannon Stapleton/Reuters

U.S. President-elect Donald Trump (C) stands surrounded by his son Eric Trump (L) daughter Ivanka and son Donald Trump Jr. (R) ahead of a press conference in Trump Tower, Manhattan, New York, U.S., January 11, 2017 Photo Shannon Stapleton/Reuters

U.S. President-elect Donald Trump speaks during a news conference in the lobby of Trump Tower in Manhattan, New York City, U.S., January 11, 2017. REUTERS/Lucas Jackson     TPX IMAGES OF THE DAY

Lucas Jackson/Reuters

U.S. President-elect Donald Trump speaks during a news conference in the lobby of Trump Tower in Manhattan, New York City today. Lucas Jackson/Reuters

A Voodoo devotee performs on a beach at the annual Voodoo Festival on January 10, 2017 in Ouidah.  Officially declared a religion in Benin in 1996, Voodoo and the Voodoo festival attracts thousands of devotees and tourists for a day filled with ritual dances and gin drinking. Benins voodoo festival is held every year and is the West African countrys most vibrant and colourful event. / AFP PHOTO / STEFAN HEUNISSTEFAN HEUNIS/AFP/Getty Images

Stefan Heunis/AFP/Getty

A Voodoo devotee performs on a beach at the annual Voodoo Festival in Ouidah, Benin.
Photo Stefan Heunis/AFP/Getty Images

Migrants warm themselves by the fire in front of an abandoned warehouse in Belgrade, Serbia, Tuesday, Jan. 10, 2017. Hundreds of migrants are sleeping rough in parks and make-shift shelters in the Serbian capital in freezing temperatures waiting for a chance to move forward toward the European Union. (AP Photo/Darko Vojinovic)

Darko Vojinovic/AP

Migrants warm themselves by the fire in front of an abandoned warehouse in Belgrade, Serbia today. Hundreds of migrants are sleeping rough in parks and make-shift shelters in the Serbian capital in freezing temperatures waiting for a chance to move forward toward the European Union. Photo Darko Vojinovic/AP

Pallbearers carry the coffin during the funeral ceremony for the late former Portuguese President Mario Soares at Mosteiro dos Jeronimos (Jeronimos Monastery) in Lisbon, on January 10, 2017.

Patricia De Melo/AFP/Getty

Pallbearers carry the coffin during the funeral ceremony for the late former Portuguese President Mario Soares at Mosteiro dos Jeronimos in Lisbon today. Photo Patricia De Melo/AFP/Getty