Iran has come to be allied with and supported by the left wing. While israel is allied with and supported by a diminishing right. This explains why right wing Trump sided with israel. While more left wing Biden and Obama side with iran.
I would say Obama/Biden's approach is one of
soft power, in contrast to Trump's. I wouldn't say either of them are exactly on Iran's side.
The real danger is israel's isolation. They have their backs to the wall. Perhaps not unlike a cornered animal. One that might attack when it has no other options.
It's just political posturing. Israel dropping nukes on neighboring countries will bring
the entire world down on Israel. They wouldn't dare.
There is no historical precedent for a reversion to precious metals based economies that I know of.
Maybe that's because fiat money only emerged very recently in history. Prior to that, most money was precious metal-based.
I truly hope war can be avoided. And that real war never occurs in anyone's lifetime. But if there was a serious war or natural disaster and you had to stake your wealth and welfare on fiat, precious metals or cryptocurrency. What would your choice be. And why.
They'll both hold their value but crypto has much more upside.