Israel has promised a harsh response to a deadly Palestinian rocket attack.  Late Sunday Israel has carried out a new round of air strikes against Hamas positions in the Gaza Strip. As Robert Berger reports from VOA's Jerusalem bureau, Israeli air strikes on the Gaza Strip are continuing as both sides reject calls for a ceasefire.

Israeli rescue workers are seen next to a car hit by a Qassam rocket fired by Palestinian militants from Gaza in the southern Israeli town of Sderot, 27 May 2007

The attack brought a stern warning from Prime Minister Ehud Olmert at the weekly Cabinet meeting in Jerusalem.

"There is no immunity for anyone involved in terror," Mr. Olmert said, hinting that the leaders of Hamas could be targeted. "We will decide when, how and to what extent we will act," he said.

Palestinians carry body parts covered in the flag of Hamas' Executive Force as other search for bodies after an Israeli missile strike on a Hamas base killed four militants in the Zeitoun neighborhood in Gaza City, Saturday, 26 May 2007

Moderate Palestinian President Mahmoud Abbas, who shares power in a coalition government led by Hamas, is trying to end the violence. "The President is working hard on achieving a ceasefire, a mutual ceasefire. And we hope in the coming 48 hours we can reach results," said his spokesman Nabil Abu Redeineh.

Hamas says it is absurd to talk about a truce while Israeli air strikes continue. And in the wake of the deadly rocket attack, Israel's offensive shows no sign of letting up.