Palestinian mourners pray over the bodies of ten victims killed after a UN school in Beit Hanun was hit by an Israeli tank shell, during their funeral in Beit Lahia, northern Gaza strip, on July 25, 2014. Fifteen Palestinians were killed on July 24, when an Israeli shell slammed into a UN shelter where hundreds of civilians had taken refuge. Fresh Israeli fire pushed the overall Palestinian death toll in Gaza to at least 800 despite world efforts to broker a ceasefire. AFP PHOTO/ MAHMUD HAMS        (Photo credit should read MAHMUD HAMS/AFP/Getty Images)