BBC
Hamas says it has submitted its response to a proposed Gaza ceasefire to mediators, with a senior group official telling the BBC that it still requires an Israeli commitment to a permanent ceasefire.
In a statement, the group, and its Palestinian Islamic Jihad (PIJ) allies, expressed "readiness to positively" reach a deal.
The proposed ceasefire plan - which was endorsed by the UN security council on Monday night - calls for a six-week ceasefire that would eventually become permanent.
Qatar and Egypt - who, along with the US, have mediated negotiations between Israel and Hamas - confirmed that the Palestinian group had submitted its reply.
In a statement, the countries said they would now "examine the response and coordinate with the parties concerned regarding next steps".
The proposal set out by Mr Biden last month involves an initial six week ceasefire with Hamas releasing some hostages in exchange for Israel releasing an undefined number of Palestinian prisoners.
A second phase would see the remaining hostages released by Hamas and a total withdrawal of Israeli forces from Gaza as part of a “permanent” ceasefire, but the latter would still be subject to negotiations.
Earlier on Tuesday US Secretary of State Antony Blinken said Israeli Prime Minister Benjamin Netanyahu had "reaffirmed his commitment" to the Gaza ceasefire plan and the world was waiting for the Hamas response.
Mr Netanyahu has acknowledged his war cabinet has authorised the plan but has not voiced unequivocally support for it. Far right ultranationalist members of his cabinet have threatened to quit his coalition and trigger its collapse if the deal goes forward, seeing it as surrender to Hamas.
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