A Somali man helps a wounded civilian while another one waits for help after a car bomb was detonated at the gate of one of Mogadishu's most popular hotel, Friday, March, 27, 2015. A Somali police official says a suicide bomber has detonated his explosives-laden car at the gate of a hotel popular with government officials in Mogadishu. Capt. Mohamed Hussein says gunfire could be heard inside the Maka-Mukarramah Hotel, but it was not clear if any gunmen had managed to penetrate the hotel's gate. (Photo by Farah Abdi Warsameh/AP Photo)

Singer Ariana Grande performs at Madison Square Garden on Friday, March 20, 2015, in New York. (Photo by Greg Allen/Invision/AP Photo)

A model wears a creation from the Matin Mozhdeh autumn/winter collection during Fashion Week in Lima, Peru, Monday, March 23, 2015. (Photo by Martin Mejia/AP Photo)

In this Monday, March 16, 2015 photo, Ashley Carter, 14, looks at a red-tailed boa constrictor during the Arizona Animal Welfare League & SPCA spring kids camp in Phoenix. Thousands of youngsters from 6 to 17 will attend similar summer camps this year at hundreds of animal shelters across the country. (Photo by Chris Carlson/AP Photo)

A H-IIA rocket, carrying a information gathering satellite, lifts off from the launching pad at Tanegashima Space Center on the Japanese southwestern island of Tanegashima, in this photo taken by Kyodo March 26, 2015. (Photo by Reuters/Kyodo News)

Young jockeys participate in a horse race to mark the 438th anniversary of the town of Takengon, Aceh province March 26, 2015, in this photo taken by Antara Foto. (Photo by Regina Safri/Reuters/Antara Foto)

In this February 19, 2015 photo, provided by 5 Swims Expedition, Lewis Pugh, of the United Kingdom, swims past a floating slab of ice in the Ross Sea in Antarctica. An extreme swimmer from Britain, Pugh completed the last of four swims in the ocean near Antarctica this month, including two that were further south than anybody had ever swum before. (Photo by Kelvin Trautman/AP Photo)

In this February 19, 2015 photo, provided by 5 Swims Expedition, Lewis Pugh, of the United Kingdom, is helped onto a support boat in the Ross Sea in Antarctica. (Photo by Kelvin Trautman/AP Photo)

In this February 19, 2015 photo, provided by 5 Swims Expedition, Lewis Pugh, of the United Kingdom, is wrapped in blankets to help warm his body in the Ross Sea in Antarctica. (Photo by Kelvin Trautman/AP Photo)

Indian models present creations by Wendell Rodricks during the Lakme Fashion Week Summer Resort 2015 in Mumbai, India, Sunday, March 22, 2015. (Photo by Rafiq Maqbool/AP Photo)

An Indian model displays creations by Tarun Tahiliani during the Lakme Fashion Week Summer Resort 2015 in Mumbai, India, Sunday, March 22, 2015. (Photo by Rafiq Maqbool/AP Photo)

An Indian model displays creations by Tarun Tahiliani during the Lakme Fashion Week Summer Resort 2015 in Mumbai, India, Sunday, March 22, 2015. (Photo by Rafiq Maqbool/AP Photo)

Afghan women rights activists carry the coffin of 27-year-old Farkhunda, an Afghan woman who was beaten to death by a mob, during her funeral, in Kabul, Afghanistan, Sunday, March 22, 2015. Hundreds of people gathered in northern Kabul for the funeral of Farkhunda, who like many Afghans is known by only one name. She was killed late Thursday by a mob of mostly men who beat her, set her body on fire and then threw it into the Kabul River, according to police accounts. Police are still investigating what prompted the mob assault. (Photo by Massoud Hossaini/AP Photo)

Independent Afghan civil society activist women weep and lie on the grave of Afghan woman Farkhunda, 27, who was lynched by an angry mob, at the cemetary in central Kabul on March 22, 2015. Hundreds of people on March 22, attended the burial of an Afghan woman who was beaten to death and set on fire by a mob for allegedly burning a copy of the Koran. The body of Farkhunda, 27, who was lynched on March 19 by an angry mob in central Kabul, was carried to the graveyard by women amid crowds of men, an AFP reporter said, a rare act of protest in a male-dominated society. (Photo by Wakil Kohsar/AFP Photo)

An Afghan protester, her face painted red to depict Farkhunda's bloodied face, shouts slogans with others during a rally in front of The Supreme Court in Kabul on March 24, 2015, held to protest the killing of Afghan woman Farkhunda. More than a thousand people protested in the Afghan capital, to call for justice after a woman was brutally killed by a mob who falsely accused her of burning a copy of the Koran. The woman, 27 year-old Farkhunda was beaten with sticks and stones, thrown from a roof, before being run over by a car outside a mosque in Kabul on March 19, the mob then set her body a blaze and dumped it in Kabul river while police allegedly looked on. (Photo by Shah Marai/AFP Photo)

People help firefighters try to contain a fire at a petrol station in Lagos, Nigeria on Thursday, March 26, 2015. Witnesses said no one was injured in the fire that consumed a number of trucks and cars at the site. Authorities continue to investigate what caused the blaze. (Photo by Sunday Alamba/AP Photo)

Firefighters try to contain a fire at a petrol station in Lagos, Nigeria on Thursday, March 26, 2015. (Photo by Sunday Alamba/AP Photo)

A firefighter and helpers flee as the try to contain a fire at a petrol station in Lagos, Nigeria on Thursday, March 26, 2015. (Photo by Sunday Alamba/AP Photo)

Revellers from Italy wear costumes as they perform at the Tunisian-Maltese Carnival in Yasmine Hammamet, near Tunis March 20, 2015. (Photo by Anis Mili/Reuters)

Girls watch soldiers from Niger and Chad in the recently retaken town of Damasak, Nigeria, March 20, 2015. Soldiers from Niger and Chad who liberated the Nigerian town of Damasak from Boko Haram militants have discovered the bodies of at least 70 people, many with their throats slit, scattered under a bridge, a Reuters witness said. (Photo by Emmanuel Braun/Reuters)

United States Secretary of State John Kerry looks at a sculpture by Niki Saint-Phalle outside the Olympic Museum in Lausanne, Switzerland March 21, 2015. (Photo by Brian Snyder/Reuters)

Children leave a “Stryker” armored fighting vehicle of the U.S. Army 2nd Cavalry Regiment, who is deployed in Estonia as a part of the U.S. military's Operation Atlantic Resolve, during the “Dragoon Ride” exercise in Parnu March 21, 2015. Operation Atlantic Resolve is aimed at demonstrating commitment to NATO allies in light of Russia's aggression in Ukraine, according to the U.S. Army. (Photo by Ints Kalnins/Reuters)

People gather around an U.S. Army 2nd Cavalry Regiment “Stryker” armored fighting vehicle in Bialystok March 24, 2015, which is a part of the U.S. military “Dragoon Ride” operation. Dragoon Ride is aimed at demonstrating commitment to NATO allies in light of Russia's aggression in Ukraine, according to the U.S. Army. (Photo by Marcin Onufryjuk/Reuters/Agencja Gazeta)

People look at the wreckage of a bus transporting Orascom employees which fell into a roadside canal in Mariouteya river channel at Giza, on the outskirts of Cairo, March 21, 2015. At least 10 people were killed on Saturday when their work bus slipped into the river canal in Giza's Haram district, according to the health ministry. (Photo by Amr Abdallah Dalsh/Reuters)

A supporter smiles before the Six Nations Rugby Union match between Italy and Wales at the Olympic stadium in Rome March 21, 2015. (Photo by Giampiero Sposito/Reuters)

Kurdish girls gesture in front of a bonfire during a gathering celebrating Newroz, which marks the arrival of spring and the new year, in Diyarbakir March 21, 2015. Jailed Kurdish rebel leader Abdullah Ocalan called on Saturday for his militant group to hold a congress on ending a three-decade insurgency against the Turkish state but stopped short of declaring an immediate halt to its armed struggle. Tens of thousands of Kurds gathered in the southeastern city of Diyarbakir to hear the message from Kurdistan Workers Party (PKK) leader Ocalan. (Photo by Umit Bektas/Reuters)

A Turkish Kurdish man jumps over a bonfire during a rally celebrating Newroz, which marks the arrival of spring and the new year, in Istanbul March 22, 2015. Jailed Kurdish rebel leader Abdullah Ocalan said on Saturday his militant group's three-decade insurgency against the Turkish state had become “unsustainable” but stopped short of declaring an immediate end to its armed struggle. (Photo by Murad Sezer/Reuters)

A man pulls a cart of cow heads at the Oriental Market in Managua February 24, 2015. Picture taken February 24, 2015. (Photo by Oswaldo Rivas/Reuters)

Models wait backstage during Ukrainian Fashion Week in Kiev March 21, 2015. (Photo by Valentyn Ogirenko/Reuters)

A model has her makeup done backstage during Ukrainian Fashion Week in Kiev March 21, 2015. (Photo by Valentyn Ogirenko/Reuters)

A child dresses up like the late Archbishop Oscar Arnulfo Romero during a march ahead of the 35th anniversary of his assassination in San Salvador March 21, 2015. Salvadoran Archbishop Romero, who was murdered by a right-wing death squad in 1980 and is an icon of the Roman Catholic Church in Latin America, had died as a martyr and will be beatified on May 23, the Vatican said. (Photo by Jose Cabezas/Reuters)

A woman weeps as she prays in the rain at a well-wishing corner for Singapore's former Prime Minister Lee Kuan Yew at the Singapore General Hospital March 22, 2015. Lee, the founding father of modern Singapore, has been in hospital with severe pneumonia since Feb. 5. He turned 91 last September. (Photo by Edgar Su/Reuters)

A woman passes a picture of former Singaporean prime minister Lee Kuan Yew, placed at a well-wishing corner at the Singapore General Hospital in Singapore March 23, 2015. Lee, Singapore's first prime minister and architect of the tiny Southeast Asian city-state's rapid rise from British tropical outpost to global trade and financial centre, died early on Monday, aged 91, the Prime Minister's Office said. (Photo by Edgar Su/Reuters)

A wave crashes against a sea wall as people gather on the waterfront in Saint Malo, western France, March 22, 2015. (Photo by Stephane Mahe/Reuters)

A reenactor is helped into his armour at the site of the Battle of Bosworth ahead of the arrival of Richard III's reburial procession, near Leicester, central England, March 22, 2015. Richard III's remains will be carried in procession through Leicestershire today on its way to the cathedral where they will be reburied. The body of Richard III, who died at the battle of Bosworth in 1485, was found under a supermarket car park in 2012. (Photo by Eddie Keogh/Reuters)

Reenactors get into their period costumes at the site of the Battle of Bosworth ahead of the arrival of Richard III's reburial procession, near Leicester, central England, March 22, 2015. (Photo by Eddie Keogh/Reuters)

King Richard III's coffin is carried into Leicester Cathedral in Leicester, central England, March 22, 2015. Richard III's remains were carried in procession through Leicestershire today on its way to the cathedral where they will be reburied. The body of Richard III, who died at the battle of Bosworth in 1485, was found under a car park in 2012. (Photo by Darren Staples/Reuters)

A girl plays with coloured chicks for sale prior to Easter celebrations in Byblos March 22, 2015. (Photo by Jamal Saidi/Reuters)

A dog called “Chilindrina”, dressed in a colourful costume, takes part in a celebration in honour of Saint Lazarus in Masaya city March 22, 2015. (Photo by Oswaldo Rivas/Reuters)