According to the agreement, the Western-backed Palestinian Authority will resume all governing responsibilities in Gaza no later than December 1.
Al-Ahmad, who is also the head of Fatah delegation for the Cairo talks, said what was agreed upon two weeks ago under the auspices of Egypt is empowering the legitimate government to operate in accordance with its powers in accordance with the Basic Law in effect in the West Bank.
"Hamas will spare no effort to turn this agreement into a reality with a view to confronting the Zionist project and establishing a sovereign state of Palestine", al-Arouri asserted.
Mr Abbas will visit Gaza in "less than a month", a Fatah official told Agence France-Presse.
He also pointed out that the government will manage the institutions and bodies of all ministries without exception, as well as the full agreement on the management of all crossings, whether with Israel or Egypt, most importantly the Rafah crossing. Egypt has been brokering the reconciliation talks.More news: Nissan made a DualShock-controlled auto to promote 'GT Sport'
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Struggling with the fallout from the border blockade, Hamas has found it increasingly hard to govern or provide basic services, such as electricity, to Gaza's people.
The source added that security officials from Ramallah would soon hold a series of meetings in Gaza with their counterparts from Hamas to discuss means of handing over security responsibility for the blockaded coastal enclave.
According to Reuters, the details regarding the agreement are expected to be revealed during a press conference this afternoon in Cairo, where the talks between the two rival Palestinian factions took place.
Hamas seized Gaza from Fatah in a near civil war in 2007 and the two factions have been at loggerheads ever since.
Since that seizure of power, Hamas - which is considered a terrorist organisation by both Israel and the United States - has ruled Gaza while Fatah, led by Palestinian figurehead Mahmoud Abbas, has controlled the West Bank.