The world already has come down on Iran's side. It's pretty much the US and Israel (and maybe the UAE) against the world. Trump has bemoaned the lack of international support. Use of bases and airpsace have been spotty. And this is only going to get worse once winter hits in Europe and people start seeing their electricity and heating bills. Asia (minus China and Japan) are the most vulnerable because they're almost entirely dependent on Gulf oil that has stopped. And they blame the US for it. Iran has allowed traffic through the Strait to countries that aren't aiding the war effort. It's now the US that is blocking it.

Americans as a whole don't understand the history of the region or know about all the sins the US has committed against Iran over a century, including being responsible for the current regime, overthrowing their democratically elected government in 1953 and stole their oil. They also propped up the Iran-Iraq war and destabilized Afghanistan to flood Iran with heroin.

There was a perfectly good deal with Iran called the JCPOA but Trump tore it out because it had Obama's name on it and Israel hated it. Everything that has happened since is Trump's (and Biden's) fault.

Iran is defending itself against an unprovoked attack by the biggest bully on the planet. The tolls are e complex issue because the navigable lanes through the Strait of Hormuz go through, in part, Iranian territorial waters. There were no tolls. The us started an unprovoked war, caused countless deaths, blew up a school through of girls and assassinated a bunch of leaders. So the tolls are viewed by many as, well, reparations. Iran never closed the Strait or enforced a toll prior to this war.

Iran also acted in good faith last year after yet another unprovoked attack (ie the 12 day war) that was ultimately called off because the US and Israel were losing the ability to intercept Iranian missiles. Why? Critically depelted munitions. And what did the US do? turned around and made another unprovoked, surprise attack rather than negotiating. Because Israel told them to.

So Iran has been forced into the position that they need to make the economic damage of this so high that the US and Israel never think about doing this again. And if you can't see why they might do that, consider what the US did after 9/11.