If Israel wanted to clean their slate, they can always present their case to the ICC. Little wonder that Likud lashes out and call the ICC "biased" for not sharing their beliefs, but such is the culture gap that the Israeli state has fostered. And such is the standards of cooperation and compliance that the rest of the world has come to expect since the horror of WWII. It's hard to not blame Israel for the terrible optics that their leadership has promoted and incorporated into their state's identity. The whataboutism in your comment proves that you also know it's wrong, but just refuse to hold Israel accountable the way that the House of Saud is (very justifiably) criticized. It's clear that Israel demands an ethical double-standard from the world.
> Hannibal directive - affects only soldiers
Officially, maybe. In practice, we know that Israeli forces have deliberately killed civilians and reservists during Hannibal scenarios, too: https://www.middleeastmonitor.com/20240709-israels-use-of-ha...
> how exactly is the Iran war illegal?
Congress never agreed to it. Israel can fight all they want, but extended US operations are jeopardized without a congressional authorization. The upcoming midterms are going to shake things up, and it's very possible that the War Powers Resolution of 1973 will be enforced to stop funding for in-theater operations outside of CENTCOM basics and foreign aid. The war isn't popular, and US taxpayers can only foot the bill for so long before they abandon Likud's warmongering initiatives. Even Trump doesn't want to escalate, considering how many threats he wussed out of.