Senior Hamas official Sami Abu Zuhri on Tuesday rejected Israeli and US calls for the group to disarm, saying its right to resist was not negotiable.
"The weapon of the resistance is a red line, and it is not negotiable," he told Reuters.
"We will not accept (any deal) to trade it for reconstruction or the entry of aid."
Meanwhile, Foreign Minister Gideon Saar said on Tuesday Israel was ready to proceed to the second phase of the Gaza ceasefire deal, as long as Hamas was ready to release more of the 59 hostages it is still holding.
Fighting in Gaza has been halted since January 19 under a truce arranged with US support and Qatari and Egyptian mediators, and Hamas has exchanged 33 Israeli hostages and five Thais for some 2,000 Palestinian prisoners and detainees.
But the initial 42-day truce has expired and Hamas and Israel, which has blocked the entry of aid trucks into Gaza, remain far apart on broader issues including the postwar governance of Gaza and the future of Hamas itself.
"We are ready to continue to phase two," Saar told reporters in Jerusalem as
"But in order to extend the time or the framework, we need an agreement to release more hostages."
Hamas says it wants to move ahead to the second phase negotiations that could open the way to a permanent end to the war with the full withdrawal of Israeli forces from the devastated Palestinian enclave and a return of the remaining 59 hostages taken in the Hamas-led attack on Israel on Oct 7, 2023.
But Israel says its hostages must be handed over for the truce to be extended and backs a plan to extend the ceasefire during the Muslim fasting month of Ramadan, which began on Saturday, until after the Jewish Passover holiday in April.
US President Donald Trump's special Mideast envoy Steve Witkoff is due to visit the region in the next few days to discuss extending the ceasefire or moving ahead of phase two, the State Department said on Monday.
