Afghan refugee families wait to be registered at the United Nations High Commissioner for Refugees (UNHCR) repatriation centre on the outskirts of Peshawar on April 27, 2017, as they prepare to return to their home country after fleeing civil war and Taliban rule. Pakistan resumed its mass repatriation of Afghan refugees despite past accusations of coercion in the supposedly voluntary UN programme to return hundreds of thousands to a war-torn nation. (Photo by Abdul Majeed/AFP Photo)





Crews guide the trunk of a 600 year old oak tree as it is moved by a crane during its removal, Wednesday, April 26, 2017, in Bernards, N.J. Crews completed taking down a 600-year-old white oak tree that's believed to be among the oldest in the nation after work was halted because of bad weather. (Photo by Julio Cortez/AP Photo)





One hundred Amnesty International protesters dressed as the Statue of Liberty demonstrate outside the US Embassy in London, Thursday, April 27, 2017, marking US President Donald Trump's first 100 days in office. (Photo by Frank Augstein/AP Photo)





Photo taken on April 26, 2017 shows the statues adorned with auditive protectors marking the International Noise Awareness Day, in Sao Paulo, Brazil, on April 26, 2017. The International Noise Awareness Day is celebrated annually the last Wednesday of April, and was created by the Center for Hearing and Communication (CHC) in 1996 to encourage people to combat noise pollution. (Photo by Rahel Patrasso/Xinhua/Barcroft Images)





An opposition activist thows a stone at riot police during clashes following a protest against President Nicolas Maduro in Caracas on April 26, 2017. Venezuelan riot police fired tear gas to stop anti-government protesters from marching on central Caracas, the latest clash in a wave of unrest that, up to now, has left 26 people dead. (Photo by Federico Parra/AFP Photo)





An opposition supporter participates in a rally against Venezuela's President Nicolas Maduro in Caracas, Venezuela April 26, 2017. (Photo by Christian Veron/Reuters)





Opposition activists clash with riot police during a protest against President Nicolas Maduro in Caracas on April 26, 2017. (Photo by Federico Parra/AFP Photo)





US First Lady Melania Trump (R) and Argentine First Lady Juliana Awada (L) walk together at the Colonnade of the White House in Washington, DC, USA, 27 April 2017. US President Donald J. Trump hosts President of Argentina Mauricio Macri at the White House. (Photo by Michael Reynolds/EPA)





US President Donald Trump (R) escorts Argentinian President Mauricio Macri (L) and his wife Juliana Awada (C) at White House in Washington, DC, April 27, 2017. (Photo by Jim Watson/AFP Photo)





Argentina' s First Lady Juliana Awada (C) and Argentina' s President Mauricio Macri (L) listen while US President Donald Trump speaks to the press before a meeting in the Oval Office of the White House April 27, 2017 in Washington, DC. (Photo by Brendan Smialowski/AFP Photo)





First lady Melania Trump listens as her husband President Donald Trump speaks to reporters during a meeting with Argentine President Mauricio Macri his wife Juliana Awada in the Oval Office of the White House in Washington, Thursday, April 27, 2017. (Photo by Evan Vucci/AP Photo)





Atletico Paranaense's fans confront police officers outside the Joaquim Americo Stadium during a Copa Libertadores match between Atletico Paranaense and Flamengo in Curitiba, Brazill, 26 April 2017. (Photo by Hedeson Alves/EPA)





Pepper the Robot is seen at the digitalSTROM stand on Girls' Day on April 26, 2017 in Berlin, Germany. The event is meant to encourage young women to pursue careers in all parts of the German economy, especially in sciences, information technology and engineering, and this year the event occurs simultaneously with the W20 women's empowerment summit, sponsored by the G20 Group of 20 major economic powers. (Photo by Adam Berry/Getty Images)





A helper competes with dog “Charlie of Greydon” of owner Zsolt Erdei, Jersey, during the IPO competition at the Belgian Shepherd World Championships in Halle (Saale), Germany, Thursday, April 27, 2017. IPO is a three part sport which includes tracking, obedience and protection phases. Dog sportsmen from 40 countries take part at the six different competitions until April 30, 2017. (Photo by Jens Meyer/AP Photo)





Ice formations are seen on the Andes mountains in Argentina's San Juan province, April 26, 2017. (Photo by Marcos Brindicci/Reuters)





Charity event competitor, Tom Harrison, continues his crawl in a gorilla outfit to raise money for the Gorilla Foundation as he competes for a fifth day in the London Marathon, aiming to complete the 26.2 mile route within a week, in London, Britain, April 27, 2017. (Photo by Toby Melville/Reuters)





Charity event competitor, Tom Harrison, continues his crawl in a gorilla outfit to raise money for the Gorilla Foundation as he competes for a fifth day in the London Marathon, aiming to complete the 26.2 mile route within a week, in London, Britain, April 27, 2017. (Photo by Toby Melville/Reuters)





Charity event competitor, Tom Harrison, (R) is joined by local a local resident and former world record holder for quickest Marathon time in fancy dress, Paul Martelletti (L) as he continues his crawl in a gorilla outfit to raise money for the Gorilla Foundation as he competes for a fifth day in the London Marathon, aiming to complete the 26.2 mile route within a week, in London, Britain, April 27, 2017. (Photo by Toby Melville/Reuters)





A Palestinian protester kicks a burning tire during clashes with Israeli troops in the West Bank city of Hebron 27 April 2017. Palestinians across the West Bank and East Jerusalem are in a general trade strike in solidarity with some 1500 Palestinian prisoners jailed in Israeli prisons for security offenses against Israelis. the prisoners started a hunger strike on 17 April protesting what they call inhumane treatment and restrictions in Israeli prisons. (Photo by Abed Al Haslhamoun/EPA)





Israeli border policemen detain a Palestinian protester during clashes at a protest in support of Palestinian prisoners on hunger strike in Israeli jails, in the West Bank town of Bethlehem April 27, 2017. (Photo by Ammar Awad/Reuters)





A police officer takes a picture during the incineration of cocaine, which weighs three tons and was seized during operations according to the attorney general's office, in Ilopango, El Salvador, April 27, 2017. (Photo by Jose Cabezas/Reuters)





A supporter of French centrist presidential candidate Emmanuel Macron glues a campaign poster, in Saint-Jean-de-Luz, southwestern France, Thursday, April 27, 2017. After “the battle of Whirlpool”, when Marine Le Pen and Emmanuel Macron both went hunting for France's blue-collar vote at a threatened home appliance factory, the presidential candidates clashed over fish in a return to more traditional campaigning on Thursday. (Photo by Bob Edme/AP Photo)





Planes from the Indonesian Air Force's Jupiter Aerobatic Team fly near the Prambanan Hindu temple during the Yogyakarta International Air Show in Central Java, Indonesia April 27, 2017 in this photo taken by Antara Foto. (Photo by Hendra Nurdiyansyah/Reuters/Antara Foto)





A visitor listens to a YYD robot at the Global Mobile Internet Conference (GMIC) 2017 in Beijing, China April 28, 2017. (Photo by Jason Lee/Reuters)





A robot from Urobot dances at the Global Mobile Internet Conference (GMIC) 2017 in Beijing, China April 28, 2017. (Photo by Jason Lee/Reuters)





A staff member sets up a ROBOTLEO robot at the Global Mobile Internet Conference (GMIC) 2017 in Beijing, China April 28, 2017. (Photo by Jason Lee/Reuters)





A supporter of veteran political leader and former prime minister Raila Odinga, attends a rally where Odinga was named as the presidential candidate for the National Super Alliance (NASA) party, during a rally in the capital Nairobi on April 27, 2017, ahead of the forthcoming elections in August. Kenya's five main opposition leaders hope their unprecedented alliance will be enough to defeat the ruling Jubilee Party on August 8. (Photo by Simon Maina/AFP Photo)





Police try to block protestors as they enter into the parliament building in Skopje, Macedonia, Thursday, April 27, 2017. Scores of protesters have broken through a police cordon and entered Macedonian parliament to protest the election of a new speaker despite a months-long deadlock in talks to form a new government. (Photo by Boris Grdanoski/AP Photo)





An injured leader of the Social Democrats Zoran Zaev is escorted out of the parliament in Skopje, Macedonia on Friday, April 28, 2017. Macedonia has been without a functioning government since 2015 when the country sank into political turmoil over a wiretapping scandal that brought down the ruling nationalist VMRO-DPMNE party bloc. Elections were held in December 2016 but no government has been formed yet. (Photo by Reuters/Stringer)





Camilla Franks strikes a pose during the CAMILLA “My Dubai Dream” Capsule Collection Launch on April 27, 2017 in Sydney, Australia. (Photo by Don Arnold/WireImage)