Smoke rises following what witnesses said was an Israeli air strike in Rafah in the southern Gaza Strip August 8, 2014. A huge explosion and a plume of smoke were seen in Gaza City on Friday, apparently from an Israeli air strike, a Reuters witness said. An Israeli military spokeswoman had no information about the strike but was checking for details. Islamist militants resumed rocket fire from the coastal enclave into Israel as a 72-hour ceasefire expired at 8 a.m. (0600 London time) on Friday. Photo by Abed Rahim Khatib/Flash90

Smoke rises following what witnesses said was an Israeli air strike in Rafah in the southern Gaza Strip August 8, 2014. A huge explosion and a plume of smoke were seen in Gaza City on Friday, apparently from an Israeli air strike, a Reuters witness said. An Israeli military spokeswoman had no information about the strike but was checking for details. Islamist militants resumed rocket fire from the coastal enclave into Israel as a 72-hour ceasefire expired at 8 a.m. (0600 London time) on Friday. Photo by Abed Rahim Khatib/Flash90

A Palestinian policeman looks at a body of a man whom medics said was killed in an Israeli air strike, at a hospital in Khan Younis in the southern Gaza Strip on August 8, 2014. Israel launched air strikes across the Gaza Strip on Friday in response to Palestinian rockets fired after Egyptian-mediated talks failed to extend a 72-hour truce in the month-long war. Photo by Abed Rahim Khatib/Flash90

A Palestinian boy, whom medics said was wounded in an Israeli air strike, lies on a bed as he arrives to receives a treatment at a hospital in Khan Younis in the southern Gaza Strip August 8, 2014. Israel launched air strikes across the Gaza Strip on Friday in response to Palestinian rockets fired after Egyptian-mediated talks failed to extend a 72-hour truce in the month-long war. Photo by Abed Rahim Khatib/Flash90

A Palestinian woman, whom medics said was wounded in an Israeli air strike, is wheeled on a stretcher at a hospital in Khan Younis in the southern Gaza Strip August 8, 2014. Israel launched air strikes across the Gaza Strip on Friday in response to Palestinian rockets fired after Egyptian-mediated talks failed to extend a 72-hour truce in the month-long war. Photo by Abed Rahim Khatib/Flash90

People gather around the bodies of Palestinians, whom medics said were killed in an Israeli air strike at a hospital in Khan Younis in the southern Gaza Strip August 8, 2014. Israel launched air strikes across the Gaza Strip on Friday in response to Palestinian rockets fired after Egyptian-mediated talks failed to extend a 72-hour truce in the month-long war. Photo by Abed Rahim Khatib/Flash90

Palestinians react following the death of their relative, whom medics said was killed in an Israeli air strike, at a hospital in Khan Younis in the southern Gaza Strip August 8, 2014. Israel launched air strikes across the Gaza Strip on Friday in response to Palestinian rockets fired after Egyptian-mediated talks failed to extend a 72-hour truce in the month-long war. Photo by Abed Rahim Khatib/Flash90