If Israelis were really in a position to 'finish off' Iran on their own, then Israel would have been begging Trump to come to help. And if Americans are really in a position to 'finish off' Iran without incurring too much cost to America then this tit-for-tat attack on Qatar wouldn't have been arranged.
Replace Iran with Syria and you might see a different American response.
Yes. Israel is not capable of defeating Iran on its own, and the US doesn't have the balls to send ground troops. As long as the other Arab countries don't help the US, and the US sends B-2s halfway around the world to drop a few bombs, that won't hurt Iran much.
Also, don't think that the Arab countries and countries like Pakistan are blaming Israel for useless verbal support. Political perversity can't be that obvious, and their accusations against Israel mean they won't provide bases to the US and Israel to bomb Iran. This is a very powerful help to Iran. These Islamic countries have not betrayed Iran!
And with the Arab states and Pakistan having made it clear that they are against an Israeli attack on Iran, it's going to be hard for the US to get bases suitable for a massive bombing campaign, which is a far cry from the Gulf War.
And the US is running low on ammo reserves right now, with Ukraine consuming the vast majority of their ammo, and China's rare earth ban still hasn't opened up the military sector.
Overall, the U.S. is suffering from a decline in national power and global influence, and there are significant limitations to their actions. This war is not only a peril for Iran, but also an opportunity for Iran. Iran will be the basis for the revival of Persian civilization if it can stay the course and force the US and Israel to make peace. Just as the Korean War did for China.
The Iranian government should also have some idea of Trump's character. The guy is a bully and a coward. His opponent's concessions will only make him feel like he can demand more, and he will quickly tear up the deal and then make even harsher demands. If his opponent is tough and gives him a hard time, he will also back down quickly and give in so fast that it will shock you. Look at how Trump is doing in the tariff war with Mexico, who chose to back down, and China, who chose to be tough.