If the lesson is "Everybody wants to kill us and the only solution to safety is to have a nation state and defend at all costs against any other group", well it just all make sense. Of course this is not the conclusion of every jew in the world but I fully expect it to be the conclusion of post WWII zionists, even though it was not the case for a lot of them that were influenced by socialist ideas but lost influence and power with time.
Of course the strategy of always planning for aggression in order to come up on top is somewhat self realizing in that defending your dominant position will necessarily mean abuses of power and resistance to it.
So the lesson is "Better safe than sorry" although it's not that simple because there is actually a safety cost to pay to maintain such a strategy.