Hamas bears "principal responsibility" for the escalating crisis between Gaza and Israel, Downing Street said tonight.

Number 10 also called rocket attacks on Israel by Hamas "completely unacceptable".

It said Prime Minister David Cameron was "extremely concerned" by the escalation in violence.

Number 10 said Mr Cameron spoke to Israeli prime minister Benjamin Netanyahu tonight by telephone to discuss the situation following Israel's assassination of Ahmed Jabari, the Hamas military chief, in a drone strike on his car yesterday.

"The Prime Minister said that he was extremely concerned by the dangerous situation and deeply sorry for the loss of civilian life on both sides," they said.
A Downing Street spokesman said: "The Prime Minister spoke to the Israeli Prime Minister, Benjamin Netanyahu, this evening to discuss the situation in Gaza and Southern Israel.

"The Prime Minister said that he was extremely concerned by the dangerous situation and deeply sorry for the loss of civilian life on both sides.

"He said the rocket attacks from Gaza into southern Israel by Hamas and other armed groups were completely unacceptable and that the increasing frequency of rocket attacks in recent days was the immediate cause of the situation.

"He made clear that Hamas bears the principal responsibility for crisis.

"The Prime Minister said that the priority must be to de-escalate the crisis. He called on Mr Netanyahu to do all he could to avoid civilian casualties and emphasised that both sides needed to avoid a spiral of violence that would be in no-one's interest, particularly at a time of instability in the region."
Downing Street said the Prime Minister hopes to speak to the president of Egypt, Mohammed Morsi, tomorrow on the same issue.

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  • Zaka volunteers and rescue personnel carry the plastic wrapped body of a victim from an apartment building that was hit by a rocket fired from the Gaza Strip, where three people were killed in Kiryat Malachi, southern Israel, Kiryat Malachi, southern Israel,Thursday, Nov. 15, 2012. Militants in the Hamas-ruled Gaza Strip killed three Israelis on Thursday in a rocket attack liable to deepen a bruising Israeli air, naval and artillery offensive against Palestinian rocket squads. The casualties were the first in Israel since it launched its operation on Wednesday with the assassination of Hamas’ top military commander. (AP Photo/Ariel Schalit)

  • The parents of 11 month-old Palestinian baby Ahmed Masharawi, killed in an Israeli strike, hold his body during his funeral in Gaza City, Thursday, Nov. 15, 2012. (AP Photo/Adel Hana)

  • People run to a safe place, as siren sounds warn for incoming rockets from the Gaza Strip, near the building that was hit by a rocket fired from the Gaza Strip, where three people were killed in Kiryat Malachi, southern Israel, Kiryat Malachi, southern Israel,Thursday, Nov. 15, 2012. Militants in the Hamas-ruled Gaza Strip killed three Israelis on Thursday in a rocket attack liable to deepen a bruising Israeli air, naval and artillery offensive against Palestinian rocket squads. The casualties were the first in Israel since it launched its operation on Wednesday with the assassination of Hamas’ top military commander. (AP Photo/Ariel Schalit)

  • Blood stains on a shoe and on a shirt in apartment in a building that was hit by a rocket fired from the Gaza Strip, where three people were killed in Kiryat Malachi, southern Israel, Kiryat Malachi, southern Israel,Thursday, Nov. 15, 2012. Militants in the Hamas-ruled Gaza Strip killed three Israelis on Thursday in a rocket attack liable to deepen a bruising Israeli air, naval and artillery offensive against Palestinian rocket squads. The casualties were the first in Israel since it launched its operation on Wednesday with the assassination of Hamas’ top military commander. (AP Photo/Ariel Schalit)

  • A Zaka volunteers clean blood stains from a children's room in an apartment in a building that was hit by a rocket fired from the Gaza Strip, where three people were killed in Kiryat Malachi, southern Israel, Kiryat Malachi, southern Israel,Thursday, Nov. 15, 2012. Militants in the Hamas-ruled Gaza Strip killed three Israelis on Thursday in a rocket attack liable to deepen a bruising Israeli air, naval and artillery offensive against Palestinian rocket squads. The casualties were the first in Israel since it launched its operation on Wednesday with the assassination of Hamas’ top military commander. (AP Photo/Ariel Schalit)

  • Zaka volunteers clean blood stains from a children's room in apartment building that was hit by a rocket fired from the Gaza Strip, where three people were killed in Kiryat Malachi, southern Israel, Kiryat Malachi, southern Israel,Thursday, Nov. 15, 2012. Militants in the Hamas-ruled Gaza Strip killed three Israelis on Thursday in a rocket attack liable to deepen a bruising Israeli air, naval and artillery offensive against Palestinian rocket squads. The casualties were the first in Israel since it launched its operation on Wednesday with the assassination of Hamas’ top military commander. (AP Photo/Ariel Schalit)

  • Zaka volunteers clean blood stains from a pillow and a baby toy in a children's room in apartment building that was hit by a rocket fired from the Gaza Strip, where three people were killed in Kiryat Malachi, southern Israel, Kiryat Malachi, southern Israel,Thursday, Nov. 15, 2012. Militants in the Hamas-ruled Gaza Strip killed three Israelis on Thursday in a rocket attack liable to deepen a bruising Israeli air, naval and artillery offensive against Palestinian rocket squads. The casualties were the first in Israel since it launched its operation on Wednesday with the assassination of Hamas’ top military commander. (AP Photo/Ariel Schalit)

  • ISRAEL-PALESTINIAN-GAZA-CONFLICT

    Israeli Zaka emergency services volunteers clean human remains from a house hit by a rocket fired by Palestinian militants killing 3 people in southern city of Kiryat Malahi on November 15, 2012. The attack on Kiryat Malachi was claimed by Hamas's armed wing, the Ezzedine al-Qassam Brigades in a statement on its website as tensions escalated between Israel and Gaza after the Israeli military carried out more than 20 air strikes and sea artillery attacks on the Palestinian territory, killing the military commander for Hamas on November 14. AFP PHOTO/JACK GUEZ (Photo credit should read JACK GUEZ/AFP/Getty Images)

  • ISRAEL-PALESTINIAN-GAZA-CONFLICT

    Israeli Zaka emergency services volunteers wheel the body of an Israeli killed when a house was hit by a rocket fired by Palestinian militants into an ambulance in the southern Israeli city of Kiryat Malahi on November 15, 2012. The attack on Kiryat Malachi was claimed by Hamas's armed wing, the Ezzedine al-Qassam Brigades in a statement on its website as tensions escalated between Israel and Gaza after the Israeli military carried out more than 20 air strikes and sea artillery attacks on the Palestinian territory, killing the military commander for Hamas on November 14. AFP PHOTO/JACK GUEZ (Photo credit should read JACK GUEZ/AFP/Getty Images)

  • ISRAEL-PALESTINIAN-GAZA-CONFLICT

    Israeli Zaka emergency services volunteers clean human remains from a house hit by a rocket fired by Palestinian militants killing 3 people in southern city of Kiryat Malahi on November 15, 2012. The attack on Kiryat Malachi was claimed by Hamas's armed wing, the Ezzedine al-Qassam Brigades in a statement on its website as tensions escalated between Israel and Gaza after the Israeli military carried out more than 20 air strikes and sea artillery attacks on the Palestinian territory, killing the military commander for Hamas on November 14. AFP PHOTO/JACK GUEZ (Photo credit should read JACK GUEZ/AFP/Getty Images)

  • Smoke rises following an Israeli air strike in the northern Gaza Strip, seen from the Israel Gaza Border, southern Israel,Thursday, Nov. 15, 2012. (AP Photo/Ariel Schalit)

  • ISRAEL-PALESTINIAN-GAZA-CONFLICT

    Israeli Zaka emergency services volunteers carry out a dead body from a house hit by a rocket fired by Palestinian militants killing 3 people in southern city of Kiryat Malahi on November 15, 2012. The attack on Kiryat Malachi was claimed by Hamas's armed wing, the Ezzedine al-Qassam Brigades in a statement on its website as tensions escalated between Israel and Gaza after the Israeli military carried out more than 20 air strikes and sea artillery attacks on the Palestinian territory, killing the military commander for Hamas on November 14. AFP PHOTO/DAVID BUIMOVITCH (Photo credit should read DAVID BUIMOVITCH/AFP/Getty Images)

  • ISRAEL-PALESTINIAN-GAZA-CONFLICT

    An Israeli reacts after a rocket launched from Gaza strip hit a building killing 3 people in the city of Kiryat Malachi on November 15, 2012. The attack on Kiryat Malachi was claimed by Hamas's armed wing, the Ezzedine al-Qassam Brigades in a statement on its website as tensions escalated between Israel and Gaza after the Israeli military carried out more than 20 air strikes and sea artillery attacks on the Palestinian territory, killing the military commander for Hamas on November 14. AFP PHOTO/DAVID BUIMOVITCH (Photo credit should read DAVID BUIMOVITCH/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Palestinian medics carry a wounded man into the al-shifa hospital in Gaza City following an Israeli air strike on November 14, 2012. An Israeli strike that killed Hamas's top commander in Gaza is only 'the beginning' of an operation to target militant groups in the strip, a military spokeswoman said. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Palestinian medics carry a wounded baby into the al-shifa hospital in Gaza City following an Israeli air strike on November 14, 2012. An Israeli strike that killed Hamas's top commander in Gaza is only 'the beginning' of an operation to target militant groups in the strip, a military spokeswoman said. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Palestinian men evacuate an elderly woman following an Israeli air strike on November 14, 2012 in Gaza City. A top Hamas commander was among seven people killed in more than 20 Israeli air strikes on the Gaza Strip, as Israel began an operation targeting militant groups. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • Jihad Masharawi

    Jihad Masharawi weeps while he holds the body of his 11-month old son Ahmad, at Shifa hospital following an Israeli air strike on their family house, in Gaza City, Wednesday, Nov. 14, 2012. The Israeli military said its assassination of the Hamas military commander Ahmed Jabari, marks the beginning of an operation against Gaza militants. (Picture EYEVINE)

  • Jihad Masharawi weeps while he holds the body of his 11-month old son Ahmad, at Shifa hospital following an Israeli air strike on their family house, in Gaza City, Wednesday, Nov. 14, 2012. The Israeli military said its assassination of the Hamas military commander Ahmed Jabari, marks the beginning of an operation against Gaza militants. (AP Photo/Majed Hamdan)

  • A Palestinian boy holds a window pane taken from a damaged house hit in an Israeli strike, in Gaza City, Thursday, Nov. 15, 2012. Israeli aircraft, tanks and naval gunboats pounded the Hamas-ruled Gaza Strip and rocket salvoes thudded into southern Israel, as residents on both sides of the frontier holed up at home in anticipation of heavy fighting on the second day of Israel's offensive against Islamic militants. (AP Photo/Hatem Moussa)

  • A Palestinian youth walks through a damaged apartment hit in an Israeli strike, in Gaza City ,Thursday, Nov. 15, 2012. Israeli aircraft, tanks and naval gunboats pounded the Hamas-ruled Gaza Strip and rocket salvoes thudded into southern Israel, as residents on both sides of the frontier holed up at home in anticipation of heavy fighting on the second day of Israel's offensive against Islamic militants. (AP Photo/Hatem Moussa)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Palestinian youths evacuate an elderly man following an Israeli air strike on November 14, 2012 in Gaza City. A top Hamas commander was among seven people killed in more than 20 Israeli air strikes on the Gaza Strip, as Israel began an operation targeting militant groups. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Smoke rises following an Israeli air strike on a house in Gaza City, on November 14, 2012. Israel killed a top Hamas military commander in a targeted strike in Gaza , prompting outrage from militants who said the Jewish state had opened 'the gates of hell.' AFP PHOTO/HOSAM SALEM (Photo credit should read HOSAM SALEM/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Palestinian medics wheel a wounded man into the al-shifa hospital in Gaza City following an Israeli air strike on November 14, 2012. An Israeli strike that killed Hamas's top commander in Gaza is only 'the beginning' of an operation to target militant groups in the strip, a military spokeswoman said. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Smoke rises following an Israeli air strike on a house in Gaza City, on November 14, 2012. Israel killed a top Hamas military commander in a targeted strike in Gaza , prompting outrage from militants who said the Jewish state had opened 'the gates of hell.' AFP PHOTO/HOSAM SALEM (Photo credit should read HOSAM SALEM/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Palestinian civilians leave their houses following an Israeli air strike on November 14, 2012 in Gaza City. A top Hamas commander was among seven people killed in more than 20 Israeli air strikes on the Gaza Strip, as Israel began an operation targeting militant groups. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-CONFLICT-GAZA-JAABARI

    Palestinian firefighters extinguish fire from the car of Ahmaed Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, after it was hit by an Israeli air strike in Gaza City on November 14, 2012. The top Hamas commander Ahmed al-Jaabari was killed in an Israeli air strike , medics and a Hamas source told . AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-CONFLICT-GAZA-JAABARI

    Palestinians extinguish fire from the car of Ahmaed Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, after it was hit by an Israeli air strike in Gaza City on November 14, 2012. The top Hamas commander Ahmed al-Jaabari was killed in an Israeli air strike , medics and a Hamas source told . AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Palestinian medics wheel a wounded boy into the al-shifa hospital in Gaza City following an Israeli air strike on November 14, 2012. An Israeli strike that killed Hamas's top commander in Gaza is only 'the beginning' of an operation to target militant groups in the strip, a military spokeswoman said. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-CONFLICT-GAZA-JAABARI

    Palestinian firefighters extinguish fire from the car of Ahmaed Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, after it was hit by an Israeli air strike in Gaza City on November 14, 2012. The top Hamas commander Ahmed al-Jaabari was killed in an Israeli air strike , medics and a Hamas source told . AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-CONFLICT-GAZA-JAABARI

    Palestinians extinguish fire from the car of Ahmaed Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, after it was hit by an Israeli air strike in Gaza City on November 14, 2012. The top Hamas commander Ahmed al-Jaabari was killed in an Israeli air strike , medics and a Hamas source told . AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-CONFLICT-GAZA-JAABARI

    Palestinians extinguish fire from the car of Ahmaed Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, after it was hit by an Israeli air strike in Gaza City on November 14, 2012. The top Hamas commander Ahmed al-Jaabari was killed in an Israeli air strike , medics and a Hamas source told . AFP. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-CONFLICT-GAZA-JAABARI

    GRAPHIC CONTENT Palestinian security forces wheel into a hospital the body of Ahmaed Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, after the car he was riding was hit by an Israeli air strike in Gaza City on November 14, 2012. The top Hamas commander Ahmed al-Jaabari was killed in an Israeli air strike , medics and a Hamas source told . AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    GRAPHIC CONTENT Palestinian men carry the body of baby to the al-shifa hospital in Gaza City following an Israeli air strike on 14 November 2012. An Israeli strike that killed Hamas's top commander in Gaza is only 'the beginning' of an operation to target militant groups in the strip, a military spokeswoman said. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-CONFLICT-GAZA-JAABARI

    Palestinian youths look inside a building where the body of Ahmaed Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, was brought to after the car he was riding was hit by an Israeli air strike in Gaza City on November 14, 2012. An Israeli air strike killed the senior Hamas military commander in Gaza City, prompting a furious response from militants who said it had opened 'the gates of hell.' AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-CONFLICT-GAZA-JAABARI

    Palestinian men react as security forces wheel into a hospital the body of Ahmaed Jaabari (unseen), head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, after the car he was riding was hit by an Israeli air strike in Gaza City on November 14, 2012. An Israeli air strike killed the senior Hamas military commander in Gaza City, prompting a furious response from militants who said it had opened 'the gates of hell.' AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    A Palestinian youth walks amid destruction following an Israeli air strike on a residential neighbourhood in Gaza City in the early hours of November 15, 2012. Israel killed on November 14 top Hamas commander Ahmed Jaabari, followed by what Palestinians said were at least 60 Israeli air strikes in which several people were killed and wounded as the UN Security Council held a late night emergency meeting on escalating tensions. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    A general view shows Gaza City in the early hours of the morning with what appears to be warning statements released by Israeli military planes on November 15, 2012. The UN Security Council held a late night emergency meeting on escalating tensions between Israel and the Palestinian territory of Gaza after Israel carried out more than 20 air strikes and sea artillery attacks on Gaza, killing the military commander for Hamas, which controls the territory. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Smoke rises following an Israeli air strike on the northern Gaza Strip on November 15, 2012. Israel continued its airstrikes on Gaza in the early morning in an operation which started on November 14 with the killing of top Hamas commander Ahmed Jaabari, followed by what Palestinians said were at least 60 Israeli air strikes. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-CONFLICT-GAZA

    Smoke rises following an Israeli air strike on the northern Gaza Strip on November 15, 2012. Israel continued its airstrikes on Gaza in the early morning in an operation which started on November 14 with the killing of top Hamas commander Ahmed Jaabari, followed by what Palestinians said were at least 60 Israeli air strikes. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Palestinians inspect an area targeted by an Israeli air strike in Gaza City in the early hours of November 15, 2012. Israel killed on November 14 top Hamas commander Ahmed Jaabari, followed by what Palestinians said were at least 60 Israeli air strikes in which several people were killed and wounded as the UN Security Council held a late night emergency meeting on escalating tensions. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    A general view shows a crater at a sport targeted by an Israeli air strike in Gaza City in the early hours of November 15, 2012. Israel killed on November 14 top Hamas commander Ahmed Jaabari, followed by what Palestinians said were at least 60 Israeli air strikes in which several people were killed and wounded as the UN Security Council held a late night emergency meeting on escalating tensions. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    A general view shows destruction in a residential area targeted by an Israeli air strike in Gaza City in the early hours of November 15, 2012. Israel killed on November 14 top Hamas commander Ahmed Jaabari, followed by what Palestinians said were at least 60 Israeli air strikes in which several people were killed and wounded as the UN Security Council held a late night emergency meeting on escalating tensions. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Palestinians inspect a destroyed building in an area targeted by an Israeli air strike in Gaza City in the early hours of November 15, 2012. Israel killed on November 14 top Hamas commander Ahmed Jaabari, followed by what Palestinians said were at least 60 Israeli air strikes in which several people were killed and wounded as the UN Security Council held a late night emergency meeting on escalating tensions. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    A picture taken from the southern Israeli town of Sderot shows smoke billowing from a spot targeted by an Israeli air strike inside the Gaza strip on November 15, 2012. The UN Security Council held a late night emergency meeting on escalating tensions between Israel and Gaza after Israel carried out more than 20 air strikes and sea artillery attacks on the Palestinian territory, killing the military commander for Hamas, which controls the territory. AFP PHOTO/JACK GUEZ (Photo credit should read JACK GUEZ/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    A general view shows a crater at a sport targeted by an Israeli air strike in Gaza City in the early hours of November 15, 2012. Israel killed on November 14 top Hamas commander Ahmed Jaabari, followed by what Palestinians said were at least 60 Israeli air strikes in which several people were killed and wounded as the UN Security Council held a late night emergency meeting on escalating tensions. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Palestinians inspect a destroyed building in an area targeted by an Israeli air strike in Gaza City in the early hours of November 15, 2012. Israel killed on November 14 top Hamas commander Ahmed Jaabari, followed by what Palestinians said were at least 60 Israeli air strikes in which several people were killed and wounded as the UN Security Council held a late night emergency meeting on escalating tensions. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    A general view shows destruction in a residential area targeted by an Israeli air strike in Gaza City in the early hours of November 15, 2012. Israel killed on November 14 top Hamas commander Ahmed Jaabari, followed by what Palestinians said were at least 60 Israeli air strikes in which several people were killed and wounded as the UN Security Council held a late night emergency meeting on escalating tensions. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    A picture taken from the southern Israeli town of Sderot shows an Israeli air force A-4N Skyhawk dropping a bomb over the Gaza strip on November 15, 2012. The UN Security Council held a late night emergency meeting on escalating tensions between Israel and Gaza after Israel carried out more than 20 air strikes and sea artillery attacks on the Palestinian territory, killing the military commander for Hamas, which controls the territory. AFP PHOTO/JACK GUEZ (Photo credit should read JACK GUEZ/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    A picture taken from the southern Israeli town of Sderot shows smoke billowing from a spot targeted by an Israeli air strike inside the Gaza strip on November 15, 2012. Rockets were launched by Palestinian militants in Gaza into Israel amid a vast Israeli operation against Gaza militants which began on November 14 with the killing of a top Hamas chief along with ten other Palestinians. AFP PHOTO/JACK GUEZ (Photo credit should read JACK GUEZ/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    Palestinians inspect an area targeted by an Israeli air strike in Gaza City in the early hours of November 15, 2012. Israel killed on November 14 top Hamas commander Ahmed Jaabari, followed by what Palestinians said were at least 60 Israeli air strikes in which several people were killed and wounded as the UN Security Council held a late night emergency meeting on escalating tensions. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT

    A Palestinian man sits amid the rubble in his bombed house following an Israeli air strike on Gaza City on November 15, 2012. The UN Security Council held a late night emergency meeting on escalating tensions between Israel and Gaza after Israel carried out more than 20 air strikes and sea artillery attacks on the Palestinian territory, killing the military commander for Hamas, which controls the territory. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

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  • PALESTINIAN-ISRAEL-GAZA-CONFLICT-FUNERAL

    Palestinian mourners carry the body of Ahmad Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, during his funeral in Gaza City, on November 15, 2012. Tensions between Israel and Gaza have sparked a furious response from Egypt's Islamist administration, which has close ties with the Palestinian territory's ruling Hamas movement, with Cairo recalling its ambassador in protest at Israel's killing of Jaabari on November 14. AFP PHOTO/MAHMUD HAMS (Photo credit should read MAHMUD HAMS/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT-FUNERAL

    GRAPHIC CONTENT Palestinians carry the body of Ahmad Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, during his funeral in Gaza City, on November 15, 2012. The violence sparked a furious response from Egypt's Islamist administration, which has close ties with Gaza's ruling Hamas movement, with Cairo recalling its ambassador in protest at Israel's killing of Hamas military chief Ahmed Jaabari. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT-FUNERAL

    Palestinian mourners carry the body of Ahmad Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, during his funeral in Gaza City, on November 15, 2012. Tensions between Israel and Gaza have sparked a furious response from Egypt's Islamist administration, which has close ties with the Palestinian territory's ruling Hamas movement, with Cairo recalling its ambassador in protest at Israel's killing of Jaabari on November 14. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT-FUNERAL

    Palestinians carry the body of Ahmad Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, during his funeral in Gaza City, on November 15, 2012. Tensions between Israel and Gaza have sparked a furious response from Egypt's Islamist administration, which has close ties with the Palestinian territory's ruling Hamas movement, with Cairo recalling its ambassador in protest at Israel's killing of Jaabari on November 14. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT-FUNERAL

    Palestinian mourners carry the body of Ahmad Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, during his funeral in Gaza City, on November 15, 2012. Tensions between Israel and Gaza have sparked a furious response from Egypt's Islamist administration, which has close ties with the Palestinian territory's ruling Hamas movement, with Cairo recalling its ambassador in protest at Israel's killing of Jaabari on November 14. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT-FUNERAL

    GRAPHIC CONTENT Palestinians carry the body of Ahmad Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, during his funeral in Gaza City, on November 15, 2012. The violence sparked a furious response from Egypt's Islamist administration, which has close ties with Gaza's ruling Hamas movement, with Cairo recalling its ambassador in protest at Israel's killing of Hamas military chief Ahmed Jaabari. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT-FUNERAL

    GRAPHIC CONTENT Palestinian mourners carry the body of Ahmad Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, during his funeral in Gaza City, on November 15, 2012. Tensions between Israel and Gaza have sparked a furious response from Egypt's Islamist administration, which has close ties with the Palestinian territory's ruling Hamas movement, with Cairo recalling its ambassador in protest at Israel's killing of Jaabari on November 14. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)

  • PALESTINIAN-ISRAEL-GAZA-CONFLICT-FUNERAL

    GRAPHIC CONTENT Palestinians carry the body of Ahmad Jaabari, head of the military wing of the Hamas movement, the Ezzedin Qassam Brigades, during his funeral in Gaza City, on November 15, 2012. The violence sparked a furious response from Egypt's Islamist administration, which has close ties with Gaza's ruling Hamas movement, with Cairo recalling its ambassador in protest at Israel's killing of Hamas military chief Ahmed Jaabari. AFP PHOTO/MOHAMMED ABED (Photo credit should read MOHAMMED ABED/AFP/Getty Images)