“We are asking Israel to apply the accords of Sharm el-Sheikh and this demand will be at the centre of my meeting with Sharon on June 7,” Abbas said following talks with Egyptian President Hosni Mubarak at this Red Sea resort.

He added that the exact date for the summit still had to be confirmed in coordination with Israeli officials, without specifying where the meeting would take place.

The two leaders declared an end to four years of hostilities at a summit -- in early February also in Sharm el-Sheikh -- but the Palestinians have repeatedly accused Israel of reneging on commitments made at the meeting such as the release of prisoners.

Israel, for its part, has said the Palestinians are not doing enough to ward off the threat of attacks against the Jewish state.

The meeting between Abbas and Sharon will come after the Palestinian leader holds his first talks as Palestinian Authority president with President George W. Bush in Washington on May 26.

Abbas said that he would be presenting Bush with two main demands: “US political support for the Palestinians, in other words application of the roadmap, and support for the Palestinian economy.”

The roadmap is the internationally-drafted peace plan that foresees the creation of a Palestinian state but has made virtually no progress since its inception in 2002.

Sharon is also due to be in the United States at the same time to meet Jewish groups, but officials have insisted that no three-way encounter is on the agenda.

The ceasefire has come under particular strain in recent days with a Palestinian militant killed by Israeli forces on Friday in an abortive assault on a Jewish settlement.

The attempted infiltration of Kfar Darom, deeply opposed to Israel’s impending pullout from the territory, was claimed by three separate militant groups -- Hamas, the Popular Resistance Committee and the Al-Aqsa Martyrs’ Brigades.

The new death brought Hamas’ losses in Gaza to three in less than 72 hours, although the circumstances of the first death are still disputed.

Abbas said that this week’s violence “would not influence” his visit to the United States.

With the informal truce in jeopardy, Israel has pledged tougher military action against Palestinians who continue to target Jewish settlements in Gaza, less than 100 days before all settlers are to be evacuated from the territory.

“The Palestinian Authority is incapable of dealing with terrorism,” Defence Minister Shaul Mofaz told army radio after the shooting, adding that the army had orders to return fire if there were any fresh attacks.

Accusing Palestinian security of standing idly by, Israel on Wednesday launched its first air strike on Palestinian territory since the informal truce began in January, targeting a Hamas group readying to fire a mortar.

Palestinian security sources have accused Hamas of orchestrating the violence to further their own interests ahead of July 17 elections, in which the Islamist group is contesting seats in parliament for the first time.