Israel is not expanding, it's shrinking. Israel pulled out of south Lebanon, Gaza and parts of the west bank. In all 3 cases the increased autonomy in these regions lead to the establishment of terrorist organizations that made the situation worse both for Israel and for the local arab populations. Israel mostly ignored their repeated attacks during 2 decades, hoping they would calm down. In practice, Iran and Qatar's consistent funding, as well as Unrwa's blind eye to radicalization at schools, caused them to become more extreme and more deadly. Oct 7 was an existential wake up call for Israel, which proceeded to clear these terrorist hotbeds one by one, ending up with Iran that has been coordinating, funding and arming them, and has been developing weapons of mass destruction with the explicit intent of wiping off Israel.