I had to post this elsewhere but here goes, I’m actually going to write this somewhere to copy it out over and over
Iran funds Hezbollah, Hamas, Houthis, some iraqi militas etc (and assad at the time) to the tune of 1-3 billion dollars a year
Hamas - we all know what they do with their cash
Hezbollah - basically took over the Lebanese state like a zombie parasite, lots of assassinations , keeps lobbing bombs at Israel but finally because they have been eroded have been told to sit down and shut up by the actual government (who by the way are also emptying the Palestinian camps of their weapons)
houthis- thanks to the Iranians they now also have slaves about 150’000 dead yeminis and child soldiers
Assad - used Hezbollah and sent actual IRCG to help kill 300’000 civilians and about 300’000 combatants (no-ones really sure but thats best estimate).
Iran is responsible for way more arab deaths than Israel. Most of this effort is because Israel exists. Everywhere it has touched it has killed democratic institutions. Iran is extremely destabilising. No most of it’s neighbours are not perfect but literally no other country in the region has made as much a mess of the Middle east than Iran.
The west is responsible over the course of history for much of what we see today to be frank but Israel really isn’t destabilising anyone who doesn’t attack it. It’s kept a steady peace with Jordan and Egypt precisely because they don’t allow attacks to be launched on Israel from their territories and when it has occasionally happened it has been quite easy to see that it was not with the endorsement of either government.