File photo of UN Secretary-General Antonio Guterres in Berlin. AFP
"I think all steps towards unity are to be welcomed and encouraged," his spokesman Stephane Dujarric said, adding that Guterres "very much welcomes the signing of the Beijing Declaration by the Palestinian factions."
Earlier on Tuesday, Hamas announced it had signed the agreement in Beijing with other Palestinian organizations -- including rivals Fatah -- to work together for "national unity."
Hamas and Fatah are long-term rivals and fought a brief but bloody war in 2007 in which the former seized control of Gaza.
Fatah continues to dominate the Palestinian Authority, which has limited administrative control over urban areas of the Israeli-occupied West Bank.
Israel swiftly slammed the Beijing-brokered deal, with Foreign Minister Israel Katz insisting that "Hamas rule will be crushed" and accusing Palestinian President Mahmoud Abbas, a leader of Fatah, of embracing the group resisting the Israeli occupation.
The text of the deal outlines plans for "a temporary national unity government by agreement of the Palestinian factions" which would "exercise its authority and powers over all Palestinian territories" -- the Gaza Strip as well the West Bank, including Israeli-annexed east Jerusalem.
Chinese Foreign Minister Wang Yi said the factions had agreed to set up an "interim national reconciliation government" to govern post-war Gaza.
Speaking at the UN, spokesperson Dujarric said unity amongst the Palestinian factions was crucial.
"Palestinian unity... is crucial for peace and security and for advancing the aspirations of the Palestinian people for self determination and for fully independent, democratic, contiguous, viable and sovereign Palestinian state," he said.
Israel's war on the Gaza Strip has killed more than 39,000 Palestinians, mostly women and children, according to the territory's health ministry.
An analysis published by The Lancet medical journal, says the actual Palestinian death toll in Gaza could exceed 186,000 people.
*This story was edited by Ahram Online
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