The October 1st attack was itself retaliation for previous Israeli attacks

Iran claimed that the attack was an act of “self-defense”[18][19] in retaliation for Israel’s assasinations of Hamas leader Ismail Haniyeh in Tehran, Hezbollah leader Hassan Nasrallah, and IRGC general Abbas Nilforoushan. The attacks, while more successful at saturating Israeli air defenses than in April, did not appear to cause extensive damage.

So of course the US is saying that Israel attacking again makes them even, since

The US said in a statement that Israel’s latest attack on Iran should now “complete” the exchange of fire between the two enemy states.

I don’t understand how the idea that you get to just attack a country, and not have them hit you back is supposed to be realistic, even if you completely agree with the US/UK/Israeli view.