Smoke rises after an Israeli air strike in Gaza City December 27, 2008.

An Israeli combat helicopter flies over the Gaza Strip after firing anti-missile flares December 28, 2008.

Palestinians inspect a burning building following an Israel air strike in Gaza Strip December 28, 2008.

A Palestinian fire fighter shouts in front of a burning building following an Israel air strike in Gaza Strip December 28, 2008.

Palestinian President Mahmoud Abbas drinks coffee after speaking to reporters in Riyadh December 27, 2008.

Palestinians lift a wounded woman to a vehicle after Israeli air force attacked Gaza City December 27, 2008.

Palestinians inspect a destroyed building of Hamas TV following an Israel air strike in Gaza Strip December 28, 2008.

Palestinian protesters burn an Israeli flag during a demonstration at Palestinian refugees Camp Al-Baqaa near Amman against Israeli strikes on Gaza, December 28, 2008.

Israeli children play inside a bomb shelter in the southern town of Sderot December 28, 2008

Smoke rises over the main Hamas security complex following an Israel air strike in Gaza December 28, 2008.

Bodies of Hamas policemen lie on the ground of their destroyed police compound following an Israeli air strike in Gaza December 27, 2008.

An explosion is seen after an Israeli air strike in the northern Gaza Strip December 29, 2008.

Palestinian fire fighters extinguish a fire in a building after an Israeli air strike in the southern Gaza Strip December 29, 2008.

Palestinians mourn beside the bodies of three children in Rafah in the southern Gaza Strip December 29, 2008.

A Palestinian man walks past destroyed Hamas government buildings after an Israeli air strike in Gaza December 30, 2008.

An Israeli is evacuated to a hospital in the Israeli town of Rehovot, near Tel Aviv December 29, 2008, after a rocket fired by Palestinian militants in Gaza landed in the Southern city of Ashdod, 30 km (18 miles) from Gaza.

An Israeli soldier searches a Palestinian youth detained during a protest in the West Bank city of Hebron against the Israeli offensive in Gaza December 30, 2008.

Palestinians carry the body of 4-year-old Lama Hamdan during her funeral in the town of Beit Hanoun in the northern Gaza Strip December 30, 2008.

Palestinians look at destroyed tunnels after an Israeli air strike on the Gaza-Egypt frontier in the southern Gaza Strip December 31, 2008.

Israel's Prime Minister Ehud Olmert (L) meets President Shimon Peres in Jerusalem December 30, 2008, in this picture released by the Israeli Government Press Office (GPO).

A trail of smoke is seen after the launch of a rocket from the northern Gaza Strip December 31, 2008.

An Israeli man looks at a classroom damaged after a rocket landed in the school in the southern city of Beersheba December 31, 2008.

Explosions are seen after an Israeli air strike in Beit Hanoun, northern Gaza Strip, January 1, 2009.

Palestinian firefighters work at the scene of an Israeli air strike on the home of senior Hamas leader Nizar Rayyan in Gaza January 1, 2009.

A Palestinian man shouts as the body of a boy is carried from the scene of an Israeli air strike on the home of senior Hamas leader Nizar Rayyan in Gaza January 1, 2009.

A wounded Palestinian girl is carried into al-Shifa hospital after an Israeli air strike in Gaza January 1, 2009.

A Palestinian woman surveys her destroyed house after an Israeli air strike in Jabalya in the northern Gaza Strip January 2, 2009.

Palestinians pray beside the bodies of senior Hamas leader Nizar Rayyan and his family during their funeral in Jabalya in the northern Gaza Strip January 2, 2009.

A Palestinian shouts as others bury the bodies of senior Hamas leader Nizar Rayyan and his family, who were killed in an Israeli air strike on their home on Thursday, during their funeral in Jabalya in the northern Gaza Strip January 2, 2009.

An Israeli border police officer fires tear gas toward Palestinian stone-throwers during a protest against Israel's offensive in Gaza, at Qalandiya checkpoint near the West Bank city of Ramallah January 2, 2009.

A Palestinian wearing a mock explosive belt and holding a Koran takes part in a protest in the Ain el-Hilweh refugee camp in south Lebanon against Israel's attacks on Gaza January 2, 2009.

A Palestinian kisses the head of Christian Palestinian, Christine Turk, during her funeral in Deir al-Laten Church in Gaza January 2, 2009.

An Israeli firefighter extinguishes a burning car after a rocket fired by Palestinian militants in Gaza landed in the southern city of Ashkelon January 2, 2009.

An Israeli police officer stands in front of a burning car after a rocket fired by Palestinian militants in Gaza landed in the southern city of Ashkelon January 2, 2009.

Smoke rises after an Israeli air strike in the northern Gaza Strip January 2, 2009.