I’ve been around a while and seen a lot of the insides of international summits over the years, but this one was truly extraordinary.

Over 20 leaders flew to Sharm el-Sheikh in Egypt from all over the world – Indonesia, Pakistan, Norway, Canada – to witness the signing of Donald Trump’s peace plan.

Gaza deal signed – as it happened

This historic day was pure theatre for Trump from start to finish. Flying in from Israel, where he had met hostage families and then addressed the Israeli parliament, he arrived a whopping three hours late, keeping a gaggle of world leaders waiting.

We stood around in corridors watching them move from one room to another to hold meetings with each other, presumably to talk about phase two of Trump’s peace deal.

Testimony to the power of Trump

At one point, Sir Keir Starmer’s meeting with his Turkish counterpart included France’s Emmanuel Macro. That then somehow morphed into a summit which also brought in the Germans, Italy’s Prime Minister Giorgia Meloni, and the leaders of Egypt and Qatar. More chairs kept coming into the room until there was the equivalent of a cabinet table of leaders and advisors sitting in a long line facing each other.

What they were talking about was how each country could help in phase two of the peace effort. Now Trump had, alongside fellow signatories of this deal – Egypt, Qatar, and Turkey – ended the war, could they maintain the peace?

As Starmer put it: “We can’t treat today as historic and let it drop tomorrow.”

But these mini summits in the margins happened by fault rather than design. This day really was designed to bear witness – and offer acknowledgement – to Trump. All of these leaders turned up pretty much in the dark as to what the day held, with his peace summit convened 48 hours earlier.

That they dropped plans to make their way to Egypt is testimony to the power Trump wields.

He was utterly omnipotent. First, there was the greeting ceremony, in which each leader filed in individually for a photo and handshake with him before all returning to the stage for the family photo.

Then, at the signing ceremony, Trump sat with his three fellow signatories as the world leaders stood behind him.

“This took 3,000 years to get to this point. Can you believe it?” Trump said as he signed that deal. “And it’s going to hold up, too. It’s going to hold up.”

Finally, in another giant hall, Trump gave a speech in which he ran through all the leaders who had turned up – praising them or fondly poking a bit of fun at them accordingly, as (most) of them stood behind him.

He teased Macron for sitting in the front row rather than joining the others on the stage, joking it wasn’t like him to be low-key. He described Meloni as a “beautiful young woman”.

“I’m not allowed to say it because usually it’s the end of your political career if you say it – she’s a beautiful young woman,” said Trump mid-speech. “You don’t mind being called beautiful, right? Because you are,” he turned to say to her – her reaction obscured from view.

Now for the ‘easy part’?

Soon after, the prime minister of Pakistan, invited to say a few remarks by Trump, renewed his call for the US president to be awarded the Nobel Peace Prize.

Having brokered the deal, Trump took the moment and made it into his summit on his terms, as fellow leaders fell into line, literally standing behind him. And in his characteristic bullishness, he told his audience in this final speech that the hard part – the ceasefire – had been done, and rebuilding Gaza was the easy part.

That isn’t really what the rest of them believe: 92% of Gazans have been displaced, the Gaza Strip is a wasteland. Organising a peacekeeping force, getting Hamas to disarm and Israel to withdraw from the strip, putting together a technocratic team and peace board to oversee the running of Gaza still needs to be done.

This was a largely celebratory day, but there are concerns whether this deal will hold up. Trump says Hamas needs to disarm and disband, and yet one of their most senior leaders told Sky News a few days ago, it won’t.

Meanwhile, there is a growing humanitarian crisis in Gaza. The UK has in short order sent in £20m of aid to try to help with sanitation.

On the British side, the prime minister said he had offered to help demilitarise the strip, saying the UK can take a role in “monitoring the ceasefire but also decommissioning the capability of Hamas and their weaponry, drawing on our experience in Northern Ireland”.

“It’s really important we keep that focus. We mustn’t have any missteps now,” he said.

Trump’s peace board is still in its infancy – Starmer told me he isn’t going to sit on it, with the make-up still being discussed, while Tony Blair’s participation is controversial.

Trump said on the way over to Egypt that he was going to canvass opinion to make sure everyone is happy with the former prime minister’s presence. It comes after Bassem Naim of Hamas told Sky News that Blair was not welcome in Gaza after his role in the invasion of Iraq.

When I asked Starmer if he thought Trump should be awarded the Nobel Peace Prize he said “there’ll be plenty of people, I’m sure, nominating him” – as he paid tribute to him for getting “leaders to this position”.

Now the task for them all is to implement what Trump has set in train. If his plan works, he would be sitting on an achievement that has eluded successive US presidents for decades.

Trump should rightly be lauded for ending the war, now he must bring the peace.