And what leads you to that conclusion? Netanyahu wants to eliminate the threat from Hamas and Hezbollah.It is what Netanyahu seems to want, and to draw USA in with him.
Whether you agree with the way he is going about it or not what he has amply demonstrated is that they can go after these people wherever they may be, without meaningful consequences, and I would suggest that includes not starting a major war.
Even when they are eliminated in another country, there will be protests from that country but no action.
I suspect the reason is that whilst many of Israel's neighbours may abhor their conduct in Gaza and elsewhere, and have some sympathy for the Palestinian cause, their enthusiasm for the cause is not sufficient for them to be prepared to go to war over it.
Many have previously fought Israel, with outcomes such that they are unlikely to want to do it again.
It is the nation states in the area that are important, not the likes of Hamas and Hezbollah.
None of them appears anywhere remotely close to going to war, and I would suggest none are likely to do so unless directly attacked by Israel.
If no one has gone to war over 30,000+ deaths in Gaza, what makes you think they are more likely to do so over a few Hezbollah fighters, or the civilians caught up in it?
The fact is that in the context of escalation to a "full scale war in the middle east" Hezbollah and Hamas are pretty much an irrelevance.
Iran will continue to meddle using Hezbollah as a proxy, but I don't doubt they would drop them like a hot brick if it started to have direct consequences for their own interests.
The only nation that has ever been able to curb Israel is the US, and the current administration is clearly unwilling to do so.
To be honest I get the impression that Biden was completely unprepared for the idea that an Israeli Prime Minister would essentially ignore him and carry on regardless.
He needs to put his foot down and stop supplies of war material as a wake up call, but is clearly not keen to take that step.
So things look set to continue as they are, and thousands more will die.