The Palestinians have relaunched efforts to reconcile their rival leaderships in the West Bank and Gaza Strip as US-brokered peace talks with Israel teeter on the edge of collapse.
A week before a nine-month target originally set for an Israeli-Palestinian deal, a Palestine Liberation Organisation (PLO) delegation was expected in Gaza City on Tuesday to try to revive long-stagnant unity efforts.
The team is being led by Azzam al-Ahmad, a senior figure in the mainstream Fatah party of president Mahmud Abbas, the head of the Western-backed Palestinian Authority (PA).
Independent MP Mustafa Barghuti and figures from two leftist parties, the Palestinian People's Party and the Palestinian Arab Front, are also in the delegation.
They were to meet with Ismail Haniya, prime minister of the Hamas government which rules Gaza, and the number two in the Palestinian Islamist movement, Mussa Abu Marzuq, who arrived from Cairo on Monday.
At the same time, the Palestinians refloated and then played down a threat to dismantle the PA, which is Israel's negotiating partner, if their peace talks remain deadlocked.
"No Palestinian is speaking of an initiative to dismantle the Palestinian Authority," chief negotiator Saeb Erakat said on Tuesday.
"But Israel's actions have annulled all the legal, political, security, economic and operational aspects of the prerogatives of the Palestinian Authority."
The PA was set up under the 1993 Oslo accords and has won widespread international recognition but is fully dependent on foreign aid for its administration of autonomous areas of the West Bank.
Palestinian negotiators have warned they may hand responsibility for governing the occupied territories back to Israel, a senior Palestinian official said on Sunday.
He said the Palestinians had told US peace envoy Martin Indyk that unless Israel releases Palestinian prisoners as agreed and freezes settlement building, they could dismantle the Authority.
US State Department spokeswoman Jennifer Psaki criticised the threat as "extreme" and warned that any such move would affect American aid to the Palestinians.
On the Israeli side, Prime Minister Benjamin Netanyahu accused the PA of endangering the peace process.
"The Palestinian Authority, which yesterday was talking about its dismantlement, is today talking about unity with Hamas," which fiercely opposes any peace talks with Israel, Netanyahu said.
"They need to decide... Do they want to dismantle themselves or to unite with Hamas? When they want peace (with Israel), they should let us know."
Fatah, the PLO's main component, and Hamas signed a reconciliation accord in Cairo in 2011 aimed at ending the political divide between Gaza and the PA-ruled West Bank.
But deadlines have come and gone without any progress in implementing provisions of the accord.
According to Barghuti, the two sides will discuss "forming a national consensus government and holding elections," among other issues.
At the same time, US peace envoy Martin Indyk was to take part in a fresh attempt to salvage Israeli-Palestinian talks at a meeting in Jerusalem.
Israel and the PA have taken a string of hostile steps since the Jewish state refused to release a batch of Palestinian prisoners as previously agreed, insisting first on Palestinian approval of an extension of the talks beyond their April 29 deadline.
Palestinian official Abbas Zaki said Abbas was ready to extend the talks, if the prisoners walk free and Israel freezes its settlement building and commits to "serious discussions on borders" in the first three months.
Leading Israeli newspaper Yediot Aharonot warned that the Palestinians had grown "very negative" with the lack of progress in the talks and were "seriously considering radical measures".