A Sri Lankan navy soldier throws bottles of drinking water to a flood victim in the Kolonnawa suburb of Colombo on May 21, 2016. Foreign aid began arriving in Sri Lanka on May 21, bringing help to half a million people forced out of their homes by rains and landslides that have killed at least 71 in a week of extreme weather wreaking havoc in South Asia. / AFP PHOTO / ISHARA S.KODIKARAISHARA S.KODIKARA/AFP/Getty Images

Sri Lankan residents look out from their home inundated by floodwaters in the Kolonnawa suburb of Colombo on May 21, 2016. Foreign aid began arriving in Sri Lanka on May 21, bringing help to half a million people forced out of their homes by rains and landslides that have killed at least 71 in a week of extreme weather wreaking havoc in South Asia. / AFP PHOTO / ISHARA S.KODIKARAISHARA S.KODIKARA/AFP/Getty Images

A Sri Lankan navy soldier throws a bottle of drinking water to a flood victim in the Kolonnawa suburb of Colombo on May 21, 2016. Foreign aid began arriving in Sri Lanka on May 21, bringing help to half a million people forced out of their homes by rains and landslides that have killed at least 71 in a week of extreme weather wreaking havoc in South Asia. / AFP PHOTO / ISHARA S.KODIKARAISHARA S.KODIKARA/AFP/Getty Images

A Sri Lankan flood victim carries water supplies through floodwaters in the Kolonnawa suburb of Colombo on May 21, 2016. Foreign aid began arriving in Sri Lanka on May 21, bringing help to half a million people forced out of their homes by rains and landslides that have killed at least 71 in a week of extreme weather wreaking havoc in South Asia. / AFP PHOTO / ISHARA S.KODIKARAISHARA S.KODIKARA/AFP/Getty Images

Sri Lanka's Prime Minister Ranil Wickremesinghe (C) visits the flooded town of Malwana, on the outskirts of Colombo on May 21, 2016. Foreign aid began arriving in Sri Lanka on May 21, bringing help to half a million people forced out of their homes by rains and landslides that have killed at least 71 in a week of extreme weather wreaking havoc in South Asia. / AFP PHOTO / ISHARA S.KODIKARAISHARA S.KODIKARA/AFP/Getty Images

Sri Lanka's Prime Minister Ranil Wickremesinghe (C) visits the flooded town of Malwana, on the outskirts of Colombo on May 21, 2016. Foreign aid began arriving in Sri Lanka on May 21, bringing help to half a million people forced out of their homes by rains and landslides that have killed at least 71 in a week of extreme weather wreaking havoc in South Asia. / AFP PHOTO / ISHARA S.KODIKARAISHARA S.KODIKARA/AFP/Getty Images

Sri Lankan residents makes their way through floodwaters in Kelaniya, on the outskirts of Colombo on May 21, 2016. Foreign aid began arriving in Sri Lanka on May 21, bringing help to half a million people forced out of their homes by rains and landslides that have killed at least 71 in a week of extreme weather wreaking havoc in South Asia. / AFP PHOTO / ISHARA S.KODIKARAISHARA S.KODIKARA/AFP/Getty Images

A Sri Lankan child is help to walk through floodwaters in Colombo on May 21, 2016. Foreign aid began arriving in Sri Lanka on May 21, bringing help to half a million people forced out of their homes by rains and landslides that have killed at least 71 in a week of extreme weather wreaking havoc in South Asia. / AFP PHOTO / ISHARA S.KODIKARAISHARA S.KODIKARA/AFP/Getty Images