A Palestinian woman reacts as a pool of blood from wounded and dead people is seen on the ground following what witnesses said was an Israeli air strike at a United Nations-run school, where displaced Palestinians take refuge, in Rafah in the southern Gaza Strip August 3, 2014. (Photo:Reuters)

A Palestinian woman reacts as the blood of wounded and dead people is seen on the ground following what witnesses said was an Israeli air strike at a United Nations-run school, where displaced Palestinians take refuge, in Rafah in the southern Gaza Strip August 3, 2014. (Photo:Reuters)

Palestinians try to evacuate a wounded boy from under the rubble of a house, which witnesses said was destroyed in an Israeli air strike, in Rafah in the southern Gaza Strip August 3, 2014. (Photo:Reuters)

A Palestinian carries a wounded boy following what witnesses said was an Israeli air strike at a United Nations-run school, where displaced Palestinians take refuge, in Rafah in the southern Gaza Strip August 3, 2014. (Photo:Reuters)

A Palestinian girl taking shelter in a United Nations-run school looks out a classroom window following what witnesses said was an Israeli air strike at the school, where displaced Palestinians take refuge, in Rafah in the southern Gaza Strip August 3, 2014. (Photo:Reuters)

Blood of wounded and dead Palestinians is seen on the ground as people gather following what witnesses said was an Israeli air strike, outside a United Nations-run school, where displaced Palestinians take refuge, in Rafah in the southern Gaza Strip August 3, 2014. (Photo:Reuters)

A woman overcome by emotion stands between dead bodies and wounded Palestinians outside a UN run school in Rafah, in the southern Gaza Strip, Sunday, Aug. 3, 2014.(AP Photo)

A Palestinian mourner cries as he identifies the body of 9-year-old Rajab Al Shrafi, at the morgue of the Kamal Adwan Hospital in Beit Lahiya, Sunday, Aug. 3, 2014. (AP Photo)