I am no fan of the Iranian regime and their mostly destructive and opportunistic meddling in war-torn/unstable Arab countries (Iraq, Lebanon, Yemen, Syria) but nowadays their regional "project" (look at the state of the areas of the Arab world that had or have minimal Iranian influence and you can see the "success" and results) that they have spent 100's of billions of dollars on, has basically fallen apart and been defeated almost everywhere. The only success story, the Houthis, have little to do with them and was only an opportunistic choice, when KSA put the idea of Houthis annexing all of Yemen to bed permanently during the intervention. Basically they are a weak, sanctioned and largely failed entity (economically in particular) and the collapse of their regime is just a question of time. In particular as the Iranian society is divided into hardcore Shia Mullahs (the 15-20% percentage of Sunni Iranians remain mostly observant Muslims and are not caught in those two worlds - the Kurds, Arabs, Turkmens, the Sunni Persian communities of the South), and anti-Mullahs which are a hilarious mixture of brown/confused/self-hating ("we wuz aryans") lot, pseudo-fire-worshippers, (largely Arabized as a whole in the past 1400 years on most fronts but don't tell them) and what not.
The point here is that they have basically capitulated (no nukes, 46 years of waste and false slogans amounted to nothing), all they are left with are the North Korean missiles but that too the West/US wants to take away from them. Sanctions also back and their clown reformists have no choice but to comply and they are doing it willingly.
What am I trying to get at here is that they are no longer seen as an even remotely threat and due to their current weakness, their dumb bravado of "controlling 4 Arab capitals", "defeating Israel and the US" has basically ended and now they are more worried about staying in power/surviving.
I am afraid, because in reality there is no need for any Arab-Iranian hostility at all, (other than geopolitical rivalry), that genuine trust is non-existent with the Iranian regime. Even the Arab Shias in Lebanon and Iraq are tired of them and distancing themselves from them.
It would require some kind of complete change in politics.
But they are themselves to blame for it, nobody told them to export their retarded revolution to the rest of us who had and have no interest in it and try to prop up 100's of Shia militias/proxies and what not.
Hence them being completely alone when Israel was wrecking them.
Had they had a more sane/friendly/not so hostile policy towards their neighbours, the situation would be different.