Speculation is mounting that Israel is preparing to step up its assault on Gaza with a ground invasion, after it announced it would briefly open Erez border crossing to allow around 440 foreign residents to leave the territory.
Friday saw continuing raids on targets in Gaza, a day after the Israeli army began clearing landmines along the border in apparent preparation for a possible ground offensive.
Tanks, armored vehicles and troops have been massing along the border for several days.
With the Israeli offensive on Gaza entering its seventh day, the death toll now stands at least 420 dead with more than 2,100 injured.
In response Hamas fighters launched more than 20 rockets into southern Israel on Thursday amd seven on Friday, some landing as far as the port city of Ashdod, more than 30km from Gaza.
An Israeli woman was injured in Friday's rocket fire, the Israeli army said.
Hamas leader killed
In the latest strikes on Gaza Israeli jets pounded the border town of Rafah in the south of the territory and the Jabaliya refugee camp.
In raids on Jabaliya, a senior Hamas official was among more than a dozen people killed when a single one ton bomb dropped from an Israeli jet destroyed his house.
Nizar Rayyan is the most senior Hamas official killed since Israel unleashed its massive bombardment on Gaza.
Hamas officials hit back at Israel after the attack saying the assault on Gaza would fail.
"The blood of Sheikh Nizar Rayyan and the blood of other martyrs will never be wasted and the enemy will pay a heavy price for the crimes it has committed," Ayman Taha, a Hamas official said.
In Jerusalem on Thursday, a coalition of left wing parties and peace groups voiced their opposition to the raids with a protest in front of the Israeli prime minister's home.
The protesters called for an immediate end to the assault on Gaza, saying the escalation of violence was a disaster for both sides.
Meanwhile Tayyip Erdogan, Turkey's prime minister, has called for an immediate ceasefire from both sides.
"Our call to Israel now is to halt its fire and to the other side to stop firing rockets and other attacks," he said after talks with Egypt's president in the Red Sea resort of Sharm el-Sheikh.
Desperate Gazans
With Israel continuing to pound Gaza, the situation for Gaza residents is becoming increasingly desperate.
Most of the 1.5 million people in the densely-populated enclave have no means of sheltering from the raids, and humanitarian groups say supplies of food and fuel are running dangerously low.
Hospitals have also reported shortages of even the most basic medicines and say they have no more capacity to deal with the growing numbers of casualties.
On Thursday, however, Tzipi Livni, the Israeli foreign minister, denied suggestions there was a humanitarian crisis in the Strip, adding "and therefore there is no need for a humanitarian truce".
Livni was speaking in Paris after talks with the Nicolas Sarkozy, the French president, whose call for a 48 ceasefire to allow in humanitarian aid has been rejected by Israel.
"Israel has been supplying comprehensive humanitarian aid to the Strip ... and has even been stepping this up by the day," the Israeli foreign ministry quoted Livni as saying.
However, Karen Abu Zayed, the commissioner for the UN Relief and Works Agency (UNRWA) in Gaza, said that in eight years of working in Gaza the need for aid had "never been so acute".
"I am appalled and saddened when I see the suffering around me," she said, adding the UNRWA has made an emergency appeal for $34 million to help the Gaza population.
Hasan Khalaf, Gaza's assistant deputy health minister, described the ongoing assault on Gaza as "an Israeli massacre".
"There is no comparison between what we have and what [Israel] are doing to us. The international community are standing unable to help us, and yet we know they have been helping Israel for tens of years.
"Even now they are comparing those getting scared in the south of Israel, and those buried under the rubble after having their houses bombarded."
PHOTO CAPTION
A Muslim boy holds a placard during a rally against Israel's air offensive over the Gaza Strip in front of the Blue Mosque in Taguig city, south of Manila December 2, 2009.
Al-Jazeera