Iran may want to get serious with Israel, but it also faces significant security dilemmas from its so-called "Muslim friends". Turkey and Azerbaijan threatens Iran's North Western borders and the northern trade routes. Not too long ago, Azerbaijan and Iran nearly came to blows over disputes with the trade routes passing through Azeri territories. To its East, there are the terrorist infested hinterlands that Iran has continuously failed to coordinate with Pakistan and Afghanistan to deal with. Why? Only the three of them knows. Across the Persian Gulf, are the Gulf states reliable when war comes to Iran? Qatar still hosts the largest US airbase in the Middile East: the Al Udeid Air Base. When the US and Israel wants to wage war on Iran, is Qatar gonna deny them from launching air raids from its soil? Or is Qatar gonna bends over backwards to the US and Israel like the good dog it always is? And if Iran strikes the Al Udied Air Base, who is Qatar really gonna side with?
On the economic front, Iran is sending mixed messages to China. It signed a BRI deal with China but has not proposed transport corridor projects for China to invest in yet. China's investments in Iran is mainly focused on O&G development. Iran is also pushing ahead with India's project to build the North-South Transport Corridor to transport shipments from India through Iran to Azerbajan, and finally to Russia. How much trade can India ship through Iran compared to China? If Iran cannot seriously deepen its economic ties with China, how is it gonna move its economy forwards and become a more formidable military power?
The current situation still benefits Iran to full send very soon.
Ukraine is losing, and with it, a lot/most of NATO's stockpiles and spec ops. A hugely boosted Russia is about to be pressed right up to inner Europe.
Nearly all advanced US equipment need to be earmarked for China specifically, otherwise they can't even compete on that front.
So in other words, neither old or new weapons can go to the middle east. Only some of US' existing planes. And if US sends most of their navy, China can snipe them out with plausible deniability in the Persian gulf. They even advertised that Iran had ASBM for such a moment.
You can also bet on that the moment Iran agrees to jump and US declares war, China will also publicly call out US threats to Taiwan, and either force them to eat the largest loss of face in American history, or face a 3 front war.
Russians did the jump and now they're better off both economically and militarily. Iran should do the same.