Palestinian firefighters extinguish fire at a house destroyed by an Israeli air strike on July 22, 2014 in Gaza City. UN chief Ban Ki-moon and US Secretary of State John Kerry are in Cairo today in a bid to broker a truce between Israel and Hamas after two weeks of fighting which has left over 570 Palestinians dead. AFP PHOTO / MAHMUD HAMS        (Photo credit should read MAHMUD HAMS/AFP/Getty Images)