As smoke rises in the skyline from an Israeli strike, mourners, some holding palm tree fronds, gather to bury seven members of the Kelani family, killed overnight by an Israeli strike in Gaza City, during their funeral in Beit Lahiya, northern Gaza Strip, on Tuesday, July 22, 2014 (Photo: AP)

A relative is comforted by mourners as they gather around the bodies of seven members of the Kelani family, killed overnight by an Israeli strike in Gaza City, during their funeral in Beit Lahiya, northern Gaza Strip, on Tuesday, July 22, 2014 (Photo: AP)

A relative bursts into tears as mourners pray in front of the bodies of seven members of the Kelani family, killed overnight by an Israeli strike in Gaza City, during their funeral in Beit Lahiya, northern Gaza Strip, on Tuesday, July 22, 2014 (Photo: AP)

Mourners gather around the bodies of seven members of the Kelani family, killed overnight by an Israeli strike in Gaza City, during their funeral in Beit Lahiya, northern Gaza Strip, on Tuesday, July 22, 2014 (Photo: AP)

Israeli soldiers march during a drill near Israel and Gaza border, Tuesday, July 22, 2014 (Photo: AP)

A destroyed house that was hit by a rocket fired by Palestinians militants from Gaza, in Yahud, central Israel, Tuesday, July 22, 2014 (Photo: AP)

Israeli tank sits in a field as heavy smoke rises from the Gaza Strip Tuesday, July 22, 2014 (Photo: AP)

Palestinians look at the remains of a mosque, which police said was hit in an Israeli air strike, in Rafah in the southern Gaza Strip July 22, 2014 (Photo: Reuters)

Flames spread across buildings after Israeli strikes in the Shijaiyah neighbourhood in Gaza City, Tuesday, July 22, 2014 (Photo: AP)

A relative carries a body of a child of the Kelani family, killed overnight by an Israeli strike in Gaza City, during their funeral, on Tuesday, July 22, 2014 (Photo: AP)