1. Gaza is also not in a state of total war, noting less then 100,000 people have died. If Gaza was in a state of total war, all able bodied men would have taken up arms, which has not happened, as demonstrated by the (relatively) low loss of life. While this is inconvenient for the Israeli narrative of Hamas= all Palastinians, nevertheless they keep on with their collective punishment.
2. There was an Oct 6th before Oct 7th and there is documented evidence of the Israeli atrocities before Oct 7th. Airs Striking civilian populations is eventually going to lead to consequences. Oct 7th was a terrorist attack, not an act of war. Israel has not formally declared war on Gaza as to do so would be to legitimize Gaza as an independent body separate from Israel, i.e. a sovereign state. If you want to call Oct 7th an Act of War then first you have to call Gaza a country. Israel bombing Iran can be considered an Act of War, but Oct 7th is a terrorist attack from a minority against their slave masters.
Finally its difficult to view the Israeli conflict with Gaza through the lens of St. Augustine doctrine. It is much easier to view Israels attack on Iran through this lens however (noting Iran funded all the terror groups around Israel). There is nothing just when related to Gaza, unless you believe it is just for the people of Gaza to rise up against their slave masters.
To paraphase a scots man. I am sinwar. I see before me a whole army of my countrymen here in defiance of tyranny. You have come here as free men, and free men you are, what will you do with that freedom? will you fight? (gallops along the line, everyone shouts "NO!")... or will you run?
Aye, we will run.
Aye, fight you may die, run, you will live. at least a while. and then, many years from now, dying in your bed, what would you give, to come back here, and tell our enemies, that they may take our lives, but never take, our freedom
rewr rewr.
sometimes a bit of comic relief is required to touch on serious topics.
My point is more that the "state" of Gaza de facto declared total war when they attacked civilians using their military forces. I would argue that Gaza (was) a de facto nation, regardless of recognized international status, and that it was a military attack and not a terrorist attack since it was sanctioned by the government. They have not, to this day, recognized any wrongdoing, therefore they are still actively declaring total war on Israel, openly saying they will kill any Israelis they can get their hands on. If they have not committed all able-bodied people to their war cause, this is discordant with their previous total war actions. Israel will still treat them as if they are declaring total war (which they are).
St Augustine did detail, I believe, parameters for which insurrection against their masters is justified. I do not believe that Gaza even comes close to these parameters - especially noting that their population has done nothing but increase while being wards of Israel, and they are given food, water, electricity, utilities for free.
Regardless, it is supremely ironic that Israel is enthusiastically doing the exact same thing, with the exact same justifications, as the Germans previously did to the Jews & other "problematic" groups. This palpable intellectual discordance does not go unnoticed, and if they continue to decry the so-called Holocaust while denying the Nakba & current events, future generations will not look fondly on them.