A picture taken from the southern Israeli Gaza border shows smoke billowing from the coastal Palestinian enclave following an Israeli air strike on Gaza City on July 22, 2014. The UN chief and Washington's top diplomat are holding a flurry of meetings in Cairo to push for an end to two weeks of violence in Gaza that has killed so far 585 Palestinians. AFP PHOTO / JACK GUEZ        (Photo credit should read JACK GUEZ/AFP/Getty Images)