Israeli tanks thrust closer to the heart of Gaza City, pressing a ground offensive hours before talks between Prime Minister Benjamin Netanyahu and President Donald Trump, who has hinted at a diplomatic breakthrough in a bid to end the war.

Israeli troops pushed deep into Gaza City on Sunday, ahead of a meeting between US President Donald Trump and Israeli Prime Minister Benjamin Netanyahu focused on ending the war in the Palestinian territory.

More than 500 Israeli soldiers have survived serious injuries fighting in Gaza, according to the military, thanks largely to lessons learned and advances in medicine.

On the eve of meeting with U.S. President Donald Trump, Israeli Prime Minister Benjamin Netanyahu said Sunday that Israel is working on a new ceasefire plan with the White House, but details are still being sorted out.

U.S. President Donald Trump will host Israeli Prime Minister Benjamin Netanyahu at the White House on Monday, having repeatedly hinted at a Gaza ceasefire agreement.

Israel's military says troops have "begun pushing into the heart of Gaza City," renewing its call for thousands of war-weary civilians to evacuate.

The health care system in Gaza City is coming under fire and being pushed toward collapse as Israeli troops bear down.

Israeli tanks advanced deeper into several densely populated neighbourhoods of Gaza City on Sunday, with health authorities unable to respond to dozens of desperate calls for help. Witnesses and medics told Reuters that the tanks entered key residential areas including Sabra, Tal al-Hawa, Sheikh Radwan and al-Nasser.