Israel cannot destroy Iran on its own.
You can count on that. I don't think Pakistan will sit idle in case of a nuclear attack on Iran!!! And even with full American/NATO help in a conventional war, the destruction of Iran would come with the destruction of Israel itself. There is simply no 'several hundred billion dollars' option available from America; Israel is, after all, a different country and a remote one at that. Americans have their own problems to deal with. Start watching the non MSM to understand that the seeds of deep suspicions about the American govt. sown during the Covid pandemic, then during the Russia-Ukraine war, are now more widespread and they will bear fruit before long.
Mark my words: A prolonged war will destroy that region but also destroy Israel as a nation and will lead to the total expulsion of the West from that region, to the benefit of China.
I encourage you and others to watch this video of Scott Ritter. He is saying if he turns against Israel then you will see others will also turn against Israel. Scott is speaking with clarity, passion and a sense of righteousness in his mind. It is almost shocking, actually, to see him like this!!