Surviving immigrants lie on the deck of Italian coastguard ship Bruno Gregoretti in Senglea, in Valletta's Grand Harbour April 20, 2015 (Photo: Reuters)
A child (C) is carried into bus as migrants arrive via boat at the Sicilian harbor of Pozzallo April 20, 2015 (Photo: Reuters)
Migrants, who are trying to reach Greece, are rescued by members of the Greek Coast guard and locals near the coast of the southeastern island of Rhodes April 20, 2015 (Photo: Reuters)
Palestinian students supporting Hamas flash three fingers to draw attention to their electoral number during an election campaign for students' council at Palestine Polytechnic University in the West Bank city of Hebron April 20, 2015 (Photo: Reuters)
Workers clean windows of a building at a commercial district in Beijing April 20, 2015 (Photo: Reuters)
Children gesture as they ride on an elephant outside a temple in the western Indian city of Ahmedabad April 20, 2015 (Photo: Reuters)
Two women make a selfie in Red Square with St. Basil Cathedral in the background in Moscow, Russia, Monday, April 20, 2015 (Photo: AP)
Runners approach the finish line in the rain during the Boston Marathon, Monday, April 20, 2015, in Boston (Photo: AP)
An Afghan photographer take a photo for visitors near a Shrine, in Kabul, Afghanistan, Monday, April, 20, 2015 (Photo: AP)
Power lines and palm trees are seen at sunset near Lost Hills, California April 20, 2015 (Photo: Reuters)
A crescent moon sits atop the Hoover Crescent Islamic Center, Monday, April 20, 2015, in Hoover, Ala. (Photo: AP)
Tulips bloom on the West Lawn of the Capitol in Washington, Monday, April 20, 2015 (Photo: AP)
Flowers are seen, during a silent commemoration for the victims of a boat accident, in Vienna, April 20, 2015 (Photo: Reuters)