Israel are unwilling or unable to hold to agreements and that makes them an unreliable partner. The same has been true of America with Iran.

Both Iran and America also have a maximalist approach in terms of use of remote weapons and reluctance to accept casualties. That limits the effectiveness of "might makes right". Massively more so in the larger Iran.

And whilst Gaza might seem like a collosal defeat it could be seen in a more positive light in a culture that views sacrifice as noble. Again same could be true of Iran.