U.S. Secretary of State Kerry listens as U.N. Secretary-General Ban makes a statement, regarding the violence in Gaza, during their meeting in Cairo
U.S. Secretary of State John Kerry listens as U.N. Secretary-General Ban Ki-moon (not pictured) makes a statement, regarding the violence in Gaza, during their meeting in Cairo, July 24, 2014. Gazan authorities said Israeli forces shelled a shelter at a U.N.-run school on Thursday, killing at least 15 people as the Palestinian death toll in the conflict climbed over 760 and attempts at a truce remained elusive. The Israeli military said its troops were fighting gunmen from Hamas, which runs Gaza, in the area and that it was investigating the incident. A spokesman for the U.N. relief agency said it had tried in vain to arrange an evacuation of civilians from the school with the Israeli army, and noted reports of Hamas rockets falling in the area at the same time. Kerry's spokesman said the school attack incident "underscores the need to end the violence". REUTERS/Pool (EGYPT - Tags: POLITICS CIVIL UNREST)
U.N. Secretary-General Ban Ki-moon makes a statement regarding the violence in Gaza, before his meeting with U.S. Secretary of State John Kerry in Cairo
U.N. Secretary-General Ban Ki-moon (L) makes a statement regarding the violence in Gaza, before his meeting with U.S. Secretary of State John Kerry in Cairo, July 24, 2014. Gazan authorities said Israeli forces shelled a shelter at a U.N.-run school on Thursday, killing at least 15 people as the Palestinian death toll in the conflict climbed over 760 and attempts at a truce remained elusive. The Israeli military said its troops were fighting gunmen from Hamas, which runs Gaza, in the area and that it was investigating the incident. A spokesman for the U.N. relief agency said it had tried in vain to arrange an evacuation of civilians from the school with the Israeli army, and noted reports of Hamas rockets falling in the area at the same time. Ban expressed his horror at the attack on the school at Beit Hanoun in the northern Gaza strip. REUTERS/Pool (EGYPT - Tags: POLITICS CIVIL UNREST)
U.N. Secretary-General Ban Ki-moon makes a statement regarding the violence in Gaza, before his meeting with U.S. Secretary of State John Kerry in Cairo
U.N. Secretary-General Ban Ki-moon (L) makes a statement regarding the violence in Gaza, before his meeting with U.S. Secretary of State John Kerry in Cairo, July 24, 2014. Gazan authorities said Israeli forces shelled a shelter at a U.N.-run school on Thursday, killing at least 15 people as the Palestinian death toll in the conflict climbed over 760 and attempts at a truce remained elusive. The Israeli military said its troops were fighting gunmen from Hamas, which runs Gaza, in the area and that it was investigating the incident. A spokesman for the U.N. relief agency said it had tried in vain to arrange an evacuation of civilians from the school with the Israeli army, and noted reports of Hamas rockets falling in the area at the same time. Ban expressed his horror at the attack on the school at Beit Hanoun in the northern Gaza strip. REUTERS/Pool (EGYPT - Tags: POLITICS CIVIL UNREST)
Palestinians who escaped what medics said was Israeli shelling that hit a U.N-run school sheltering Palestinian refugees, rest at a hospital in Jabaliya in the northern Gaza Strip
Palestinians who escaped what medics said was Israeli shelling that hit a U.N-run school sheltering Palestinian refugees, rest at a hospital in Jabaliya in the northern Gaza Strip July 24, 2014. U.N. Secretary-General Ban Ki-moon said on Thursday he was appalled by an attack on a United Nations-run school in the Gaza strip that killed civilians, including children, and U.N. staff. The Gaza health ministry said at least 15 people had been killed and some 200 wounded. More than 140,000 Palestinians have fled 17 days of fighting between Israel and Gaza militants, many of them seeking shelter in buildings run by the U.N. Refugee Works Agency (UNRWA). Israeli forces are trying to stop Hamas militants, which rules Gaza, and their allies from firing rockets into Israel. REUTERS/Finbarr O'Reilly (GAZA - Tags: POLITICS MILITARY CIVIL UNREST CONFLICT)
Kaduna State Police Commissioner Alhaji Umar Shehu speaks next to Kaduna State Governor Mukhtar Yero at the point of impact of a suicide bomb along Alkali Road in Kaduna
Kaduna State Police Commissioner Alhaji Umar Shehu (centre R, in blue uniform) speaks next to Kaduna State Governor Mukhtar Yero (centre L) at the point of impact of a suicide bomb along Alkali Road in Kaduna July 24, 2014. At least 82 people were killed on Wednesday in two suicide bombings in the north Nigerian city of Kaduna, one aimed at opposition leader and ex-president Muhammadu Buhari and another at a moderate Muslim cleric about to lead a crowd in prayer. Kaduna state governor Mukhtar Yero on Thursday lifted a 24-hour curfew imposed on the state after the bombings. REUTERS/Stringer (NIGERIA - Tags: CIVIL UNREST POLITICS CRIME LAW)
A policeman stands next to the point of impact of a suicide bomb along Alkali Road in Kaduna
A policeman stands next to the point of impact of a suicide bomb along Alkali Road in Kaduna July 24, 2014. At least 82 people were killed on Wednesday in two suicide bombings in the north Nigerian city of Kaduna, one aimed at opposition leader and ex-president Muhammadu Buhari and another at a moderate Muslim cleric about to lead a crowd in prayer. Kaduna state governor Mukhtar Yero on Thursday lifted a 24-hour curfew imposed on the state after the bombings. REUTERS/Stringer (NIGERIA - Tags: CIVIL UNREST POLITICS)
Varda, mother of Israeli soldier Pomerantz who was killed during fighting in Gaza on Sunday, salutes next to his grave during his funeral in Kfar Azar, near Tel Aviv
Varda (C), the mother of Israeli soldier Daniel Pomerantz who was killed during fighting in Gaza on Sunday, salutes next to his grave during his funeral in Kfar Azar, near Tel Aviv July 24, 2014. Gazan authorities said Israeli forces shelled a shelter at a U.N.-run school on Thursday, killing at least 15 people as the Palestinian death toll in the conflict climbed over 750 and attempts at a truce remained elusive. The Israeli military said its troops were fighting gunmen from Hamas, which runs Gaza, in the area and that it was investigating the incident. A spokesman for the U.N. relief agency said it had tried in vain to arrange an evacuation of civilians from the school with the Israeli army, and noted reports of Hamas rockets falling in the area at the same time. REUTERS/Baz Ratner (ISRAEL - Tags: CONFLICT POLITICS MILITARY CIVIL UNREST OBITUARY)
Palestinian women leave a hospital after what medics said was an Israeli shell that hit a U.N-run school sheltering Palestinian refugees, in Jabaliya in the northern Gaza Strip
Palestinian women leave a hospital after what medics said was an Israeli shell that hit a U.N-run school sheltering Palestinian refugees, in Jabaliya in the northern Gaza Strip July 24, 2014. U.N. Secretary-General Ban Ki-moon said on Thursday he was appalled by an attack on a United Nations-run school in the Gaza strip that killed civilians, including children, and U.N. staff. The Gaza health ministry said at least 15 people had been killed and some 200 wounded. More than 140,000 Palestinians have fled 17 days of fighting between Israel and Gaza militants, many of them seeking shelter in buildings run by the U.N. Refugee Works Agency (UNRWA). Israeli forces are trying to stop Hamas militants, which rules Gaza, and their allies from firing rockets into Israel. REUTERS/Finbarr O'Reilly (GAZA - Tags: POLITICS MILITARY CIVIL UNREST CONFLICT)
Israeli soldiers carry the flag-draped coffin of their comrade Daniel Pomerantz who was killed during fighting in Gaza on Sunday, during his funeral in Kfar Azar, near Tel Aviv
Israeli soldiers carry the flag-draped coffin of their comrade Daniel Pomerantz who was killed during fighting in Gaza on Sunday, during his funeral in Kfar Azar, near Tel Aviv July 24, 2014. Gazan authorities said Israeli forces shelled a shelter at a U.N.-run school on Thursday, killing at least 15 people as the Palestinian death toll in the conflict climbed over 750 and attempts at a truce remained elusive. The Israeli military said its troops were fighting gunmen from Hamas, which runs Gaza, in the area and that it was investigating the incident. A spokesman for the U.N. relief agency said it had tried in vain to arrange an evacuation of civilians from the school with the Israeli army, and noted reports of Hamas rockets falling in the area at the same time. REUTERS/Baz Ratner (ISRAEL - Tags: CONFLICT POLITICS MILITARY CIVIL UNREST OBITUARY)
Relatives and friends of Israeli soldier Daniel Pomerantz who was killed during fighting in Gaza on Sunday, mourn during his funeral in Kfar Azar, near Tel Aviv
Relatives and friends of Israeli soldier Daniel Pomerantz who was killed during fighting in Gaza on Sunday, mourn during his funeral in Kfar Azar, near Tel Aviv July 24, 2014. Gazan authorities said Israeli forces shelled a shelter at a U.N.-run school on Thursday, killing at least 15 people as the Palestinian death toll in the conflict climbed over 750 and attempts at a truce remained elusive. The Israeli military said its troops were fighting gunmen from Hamas, which runs Gaza, in the area and that it was investigating the incident. A spokesman for the U.N. relief agency said it had tried in vain to arrange an evacuation of civilians from the school with the Israeli army, and noted reports of Hamas rockets falling in the area at the same time. REUTERS/Baz Ratner (ISRAEL - Tags: CONFLICT POLITICS MILITARY CIVIL UNREST OBITUARY)