One week ago, US President Donald Trump was given a hero's welcome in Israel after securing the Gaza ceasefire and exchange of Israeli hostages for Palestinian prisoners.
But the days since have shown just how precarious the ceasefire is, and Sunday brought its biggest test so far.
The Israel Defense Forces (IDF) launched a series of deadly strikes across Gaza, after two soldiers were killed in an attack it blamed on Hamas. An Israeli security official announced the suspension of aid deliveries.
It appears US pressure ensured the truce was not derailed and that Israel's crossings with Gaza reopened on Monday. Now it is clear mediators must stay closely involved to shore up the deal and settle key issues on the future of Gaza and Hamas.
Already, the president's special envoys Steve Witkoff and Jared Kushner are back in the region while Hamas negotiators are meeting Egyptian mediators and Palestinian factions in Cairo.
All are expected to discuss the second phase of Trump's 20-point peace plan, which involves deploying an international stabilisation force in Gaza, the eventual withdrawal of the IDF and critically, the disarmament of Hamas.
Palestinians and Israelis have been shaken by the latest breakdown.
From the start of the war I was with him 24 hours a day, I never left him, bereaved father, Shadi Abu Obeid told the BBC in Khan Younis as he fought back tears at the funeral of his 14-year-old son Mohammed early on Monday.
Because of the ceasefire I was a bit more relaxed, and I let him go out with his friends, Shadi added. It was quiet and there were meant to be international guarantees.
Mohammed was killed with two others in an Israeli strike on a tent in al-Mawasi. The IDF would not comment on who or what was specifically being targeted.
At least 45 Palestinians were killed, local hospitals say, after the IDF said it struck 'dozens of Hamas terror targets throughout the Gaza Strip'.
Trump's envoys – who played a key role in negotiations with Hamas – had been expected in Israel to meet Prime Minister Benjamin Netanyahu, prior to the latest events.
The latest events have Israeli commentators focusing once again on the weaknesses of the deal agreed by Israel and Hamas.
In Israel's Haaretz newspaper, journalist and author Amir Tibon notes that it was full of vague wording that left significant loopholes.
