Thousands cheer claims of victory in last month's war and warnings that more Israeli soldiers could be kidnapped.
Khaled Meshaal, the political leader of the Palestinian Islamist party Hamas, is expected to retire at upcoming leadership elections.
A visit by Gaza's Hamas leader has angered official Palestinian representatives in Tunisia who say they were 'ignored' during the talks.
Palestinian President Mahmoud Abbas and Hamas leader Khaled Meshaal buried the hatchet at a Cairo reconciliation ceremony on Wednesday.
Thousands of young men in Gaza are becoming addicted to a prescription painkiller used to alleviate the stress of living in the besieged territory.
Hamas is ready to accept a Palestinian state within the 1967 borders but "it will not recognise Israel", the Islamist movement's exiled chief Khaled Meshaal told a news conference on Monday. "We accept a Palestinian state within the June 4 1967 borders with Jerusalem as its capital ... but without recognition of Israel," he said.
Former United States president Jimmy Carter said on Monday Hamas leaders told him they would accept a peace agreement negotiated by their rival, Palestinian President Mahmoud Abbas, if Palestinians approved the deal in a vote. In a speech, Carter said Hamas "said they would accept a Palestinian state on the 1967 borders if approved by Palestinians."
Former United States president Jimmy Carter met Hamas leader Khaled Meshaal in Damascus on Friday for talks expected to focus on ways to include the Islamist group in efforts to achieve Palestinian-Israeli peace. High-level Hamas members also attended the meeting, at which Carter would also raise with Meshaal the fate of an Israeli soldier captured by Hamas.
Former United States president Jimmy Carter met Gaza-based leaders of Islamist Hamas in Cairo on Thursday, defying US and Israeli criticism that saw him barred from visiting the Palestinian territory. Nobel Peace Prize-winner Carter is considered to be the architect of the 1979 Egypt-Israel peace treaty.
Israel killed 52 Palestinians on Saturday in its deadliest and deepest incursion into the Gaza Strip since pulling out in 2005, stoking fears of a broader conflict that could derail renewed United States-backed peace talks. At least 29 of the dead were civilians, among them women and children, said Palestinian doctors who were working round the clock.