The MOU was just a PR exercise to allow Trump to call off the US blockade, they were always going to keep

bombing any parts of Iran they thought could help the IRGC, and they knew Iran was not going to allow passage through Iran without a toll.

They are moving into a frozen war where the US will bomb as much as they can without triggering the ire of the US public, and Iran will monetize the Hormuz strait as much as possible