Indonesia's leader on Tuesday offered to send at least 20,000 troops as peacekeepers to Gaza to safeguard any future peace deal.

Addressing the UN General Assembly, President Prabowo Subianto said that the world's most populous Muslim-majority country wanted a peace that shows that "might cannot make right."

"We believe in the UN. We will continue to serve where peace needs guardians – not with just words, but with boots on the ground," he said.

"If and when the UN Security Council and this great Assembly decide, Indonesia is prepared to deploy 20,000 or even more of our sons and daughters to help secure peace in Gaza," he said.

He said that Indonesia was also willing to send peacekeepers elsewhere including in Ukraine, Sudan or Libya.

The United States and Arab states have been speaking for months, but to little avail, about a post-war plan in Gaza which has been devastated by two years of Israeli attacks in response to an assault by Hamas.

Israel has repeatedly demanded the destruction of Hamas. Its latest offensive seeks to take over the largest urban centre of Gaza City, but previous proposals have called for foreign powers to take over the territory's security.

France and Saudi Arabia, in a resolution adopted by the vast majority of the General Assembly, called for a temporary international mission to stabilise Gaza as part of a ceasefire.

Meanwhile, Italy says it will recognise a Palestinian state only if all Israeli hostages are released and the Hamas militant group is excluded from any government role, Italian Prime Minister Giorgia Meloni said on Tuesday.

"I am not against the recognition of Palestine, but we should set ourselves the right priorities," Meloni told reporters, announcing her government would present a motion to parliament on the issue.

Speaking on the sidelines of the UN General Assembly in New York, Meloni also said international pressure should be placed on Hamas rather than Israel, blaming the group for starting the war and blocking its end by refusing to hand over hostages.

Meloni leads a right-wing government that has been one of Israel's strongest allies in the European Union and has refused to follow other G7 nations like Britain, Canada and France in recognizing Palestinian statehood this month. (Agencies)