In this July 5, 2006, file photo, Sri Lankan Tamil Tiger rebels salute during an annual memorial for suicide cadres at the rebel controlled eastern town of Kovilporativu in Batticaloa, Sri Lanka. The April 21, 2019 deadly Easter attacks in Sri Lanka are a bloody echo of decades past in the South Asian island nation, when militants inspired by attacks in the Lebanese civil war helped develop the suicide bomb vest. Over nearly 30 years of civil war, the Tamil Tigers would launch more than 130 suicide bomb attacks, making them the leading militant group in such assaults at the time. (Photo by Eranga Jayawardena/AP Photo)





A Sri Lankan woman living near St. Anthony's shrine runs for safety with her infant after police found explosive devices in a parked vehicle in Colombo, Sri Lanka, Monday, April 22, 2019. Easter Sunday bombings that ripped through churches and luxury hotels killed more than 200 people. (Photo by Eranga Jayawardena/AP Photo)





Relatives weep near the coffin with the remains of 12-year Sneha Savindi, who was a victim of Easter Sunday bombing at St. Sebastian Church, after it returned home, Monday, April 22, 2019 in Negombo, Sri Lanka. Easter Sunday bombings of churches, luxury hotels and other sites was Sri Lanka's deadliest violence since a devastating civil war in the South Asian island nation ended a decade ago. (Photo by Gemunu Amarasinghe/AP Photo)





People who live near the church that was attacked yesterday, leave their houses as the military try to defuse a suspected van before it exploded in Colombo, Sri Lanka on April 22, 2019. (Photo by Dinuka Liyanawatte/Reuters)





Sri Lankans living near St. Anthony's shrine run for safety after police found explosive devices in parked vehicle, which later exploded in Colombo, Sri Lanka, Monday, April 22, 2019. Easter Sunday bombings that ripped through churches and luxury hotels killed more than 200 people. (Photo by Eranga Jayawardena/AP Photo)





Security personal react as a device was detonated in a controled explosion in a van near the St Anthony's Church Kochchikade in Colombo, Sri Lanka, 22 April 2019. According to news reports, at least 290 people have been killed and over 500 were injured on 21 April 2019 in a series of blasts during Easter Sunday service at churches and hotels across Colombo. (Photo by M.A. Pushpa Kumara/EPA/EFE)





Firefighters tackle a fire on moorland above the village of Uppermill in north-west England, on April 22, 2019. (Photo by Oli Scarff/AFP Photo)





U.S. first lady Melania Trump high fives a child at the hopscotch station during the 2019 White House Easter Egg Roll on the South Lawn of the White House in Washington, U.S., April 22, 2019. (Photo by Al Drago/Reuters)





U.S. President Donald Trump, accompanied by a person dressed as the Easter Bunny, welcomes guests with opening remarks during the 141st Easter Egg Roll on the South Lawn of the White House April 22, 2019 in Washington, DC. About 30,000 people are expected to attend the annual tradition of rolling colored eggs down the South Lawn of the White House that dates back to the Rutherford B. Hayes Administration in 1878. (Photo by Win McNamee/Getty Images)





Ukrainian President Petro Poroshenko bow to the people as his wife Maryna applauds while they greet their supporters who have come to thank him for what he did as a president, in Kiev, Ukraine, Monday, April 22, 2019. Political mandates don't get much more powerful than the one Ukrainian voters gave comedian Volodymyr Zelenskiy, who as president-elect faces daunting challenges along with an overwhelming directive to produce change. (Photo by Vadim Ghirda/AP Photo)





Extinction Rebellion climate change activists perform a mass "die in" under the blue whale in the foyer of the Natural History Museum in London on April 22, 2019, on the eighth day of the environmental group's protest calling for political change to combat climate change. Climate change protesters who have brought parts of London to a standstill said Sunday they were prepared to call a halt if the British government will discuss their demands. Some 963 arrests have been made and 42 people charged in connection with the ongoing Extinction Rebellion protests. (Photo by Tolga Akmen/AFP Photo)





Central American migrants traveling in a caravan to the U.S. border walk hand in hand on the shoulder of a road in Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (Photo by Moises Castillo/AP Photo)





A Chinese navy chorus performs during a concert featuring Chinese and foreign military bands in Qingdao, Monday, April 22, 2019. Ships from Chinese and foreign navies have gathered in Qingdao for events this week, including a naval parade, to mark the 70th anniversary of the founding of the People's Liberation Army (PLA) Navy. (Photo by Mark Schiefelbein/AP Photo)





A Chinese military dance troupe performs during a concert featuring Chinese and foreign military bands in Qingdao, Monday, April 22, 2019. Ships from Chinese and foreign navies have gathered in Qingdao for events this week, including a naval parade, to mark the 70th anniversary of the founding of the People's Liberation Army (PLA) Navy. (Photo by Mark Schiefelbein/AP Photo)





Dervishes perform at Gelibolu Lodge of Mevlevi Dervishes with the collaboration of Canakkale Onsekiz Mart University in Canakkale, Turkey on April 21, 2019. (Photo by Sergen Sezgin/Anadolu Agency/Getty Images)





Participants take part in the annual 'London Harness Horse Parade' on Easter Monday at The South of England Event Centre on April 22, 2019 in Ardingly, England. The parade of harnessed horses, ponies and donkeys attracts exhibitors from across the UK and Ireland who are judged on numerous criteria in the hope of receiving a First Class award. The historic Parade is an amalgamation of the London Cart Horse Parade, founded in 1885, and the London Van Horse Parade, founded in 1904. (Photo by Dan Kitwood/Getty Images)





Novice monks leave after an event to celebrate the upcoming Vesak Day, birthday of Buddha, at Jogye temple in Seoul, South Korea, April 22, 2019. (Photo by Kim Hong-Ji/Reuters)





Men throw water on women as part of traditional Easter celebrations in Mezokovesd, Hungary, April 22, 2019. (Photo by Bernadett Szabo/Reuters)





People in costumes pose for photos at the 15th edition of the Polymanga 2019 pop culture festival in Montreux, Switzerland, 21 April 2019. (Photo by Jean-Christophe Bott/EPA/EFE)





Two women pose for a friend as they take pictures amongst cherry blossom in Greenwich in London, Britain, April 22, 2019. (Photo by Toby Melville/Reuters)





Camel racing made its debut in Paxford, Gloucestershire, England yesterday at a point-to-point event on April 22, 2019. Each of the four camels was sponsored by a local pub. (Photo by Paul Nicholls/The Times)