The Israelis needed the ceasefire because it was running out of air defense missiles. From John Helmer a johnhelmer.net:

Why do so many CIA and MI6 officers (retired) know and say so much about the damage Israel and the US have inflicted on Iran since they began their war on June 13, but so little about the damage Iran has inflicted on Israel (lead image)?
“As you know,” President Donald Trump said last night, following the NATO summit meeting in The Netherlands, “last weekend the United States successfully carried out a massive precision strike on Iran’s nuclear enrichment facilities. And it was very, very successful. It was called obliteration. No other military on earth could have done it. And now this incredible exercise of American strength has paved the way for peace with a historic ceasefire agreement late Monday.”
He then asked his Defense Secretary Peter Hegseth to clarify how to interpret the military intelligence reporting from “the group [Defense Intelligence Agency] that’s run by this gentleman, in fact, he may want to talk about it for a second.” Hegseth: “somebody somewhere is trying to leak something to say — oh, with low confidence – [that] we think maybe it’s moderate. Those that drop the bombs precisely in the right place know exactly what happened when that exploded. And you know who else knows? Iran. That’s why they came to the table right away because their nuclear capabilities have been set back — back beyond what they thought were [sic] possible because of the courage of a commander in chief who led our troops, despite what the fake news wants to say.”
By this intelligence reporting standard, escalation of force by the US has compelled Iran to negotiate terms of capitulation which it was refusing to accept before June 13. But what, according to this intelligence standard, has been motivating Israel to accept Trump’s ceasefire?
The answer to that is the most classified secret the Trump Administration, the Israeli government, and the Jewish financiers of Trump’s election campaigns are keeping. This is also a secret so sensitive that not one of the US media Trump is attacking dares to publish it.
We iz gonna conquer teh worldz!
I saw it on social media from “warrior” DJT.
Honk, honk.