Once Gaza and the West Bank are taken care of, will Lebanon, Jordan, or Syria be next?
Israel very much depends on being the dominant power in the region. If they lose US support, things could get ugly indeed. And they are losing support rapidly now.
Why should Israel allow themselves to be attacked by Syria and Lebanon? Did you miss what Lebanon did to people in northern Israel? Seems like you think Jews should just sacrifice themselves for some reason.
Hezbollah declared war on Israel, unprovoked, on October 8th through to late 2024, by launching constant missile attacks on civilian areas, notwithstanding their violation of UNSC Resolution 1701. Israel is justified under international law to invade South Lebanon and completely decimate Hezbollah unless it offers an unconditional surrender.
I am more sympathetic to your views regarding Syria, however. That is a less justifiable war with nebulous preventive/preemptive motivations, which is somewhat coherent on a pure self-interested security basis but is likely validly unjust under different frames of reference (morality, modern global norms and taboos, and international law).
The Netherlands and the United Kingdom (specifically, the Isles of Scilly) were at war from 1651 until 1986, with war declared by The Netherlands. In practice it only lasted for a few months during 1651, was bloodless, and they simply forgot about the formalities. A peace treaty was only signed after a historian asked the government whether they were still at war, and they discovered that they never got around to it so technically they still were!
Does that mean the United Kingdom would not be the aggressor if they were to bomb The Netherlands in 1985?
Given that Jordan & Israel have relatively good relations (I say "relative", the entire region is a mess), why would they be next?
If anything, currently it looks like Israel's relations with its nearby neighbours (excluding Palestine. Syria is bit unclear also) are improving while its relationship with the broader world is sinking like a stone.
What are they currently doing then? They're already supporting the "settlers" so territorial expansion is already in progress. They haven't expanded beyond that right now, but judging by their current actions, it seems to me they're already on that route, and only small parts of the world is currently trying to stop them.
Israel very much depends on being the dominant power in the region. If they lose US support, things could get ugly indeed. And they are losing support rapidly now.