Al-Barghouti, head of the National Initiative party in the parliament, told local radio "Voice of Palestine" that all factions should participate in the dialogue in a bid to better deal with internal and external pressures the Palestinians are facing.

The coming talks will also help form a united Palestinian front to break up any unilateral step by Israel, he added. In addition, al-Barghouti said that Palestinian civil and private organizations should also be allowed to take part in the talks in order to make the conference "represent all circles of the society."

"I hope the conference can help rally international support to the Palestinians to counter the Israeli plan of unilateral withdrawals from the West Bank," he added.

The lawmaker said that an ad hoc committee in charge of preparations for the national dialogue would hold its first meeting in the West Bank city of Ramallah later on Saturday. The Islamic Resistance Movement (Hamas), bent on Israel’s destruction, took the reins of the Palestinian government in late March after winning the January legislative elections. But the new government has been confronted with a severe financial crisis due to the West's cut of crucial aid and political isolation.

Meanwhile, newly sworn-in Israeli Prime Minister Ehud Olmert has announced that he intends to draw the borders with the Palestinians within four years by quitting isolated settlements in the West Bank but enlarging bigger ones in the absence of peace talks with the Palestinian side.