And also a gigantic, gigantic escalation.

"You made a deal that disadvantages us so we're going to rape and murder a bunch of teenagers and kidnap people."

It’s not a justification, obviously. But it is a (partial) explanation. Israel wanted to keep sweeping the Palestinian issue under the rug, and Hamas and its sponsors were not going to allow that.

You claimed that Iran "time and again does not escalate against provocations by the US and Israel".

Sure, it's an explanation. Everything shitty Israel or Hamas has done since 1950 has an "explanation" of "that other group did something to me".