Just a consideration-
An idea-
Maybe not applicable here, but just a general idea to consider.
In a professional, disciplined, military with real command and control (with the ability to track things fairly well), ROE that are adhered to (generally), you don’t get a lot of folks doing their own thing.
I say usually because even we have incidents where folks do things out of line may it be prisoner abuses, executing POW... It happens:
https://en.wikipedia.org/wiki/Abu_Ghraib_torture_and_prisoner_abuse
https://en.wikipedia.org/wiki/Michael_Behenna
https://en.wikipedia.org/wiki/John_E._Hatley
But in places like Gaza, with Hezbollah, or even the Iranian forces, especially after we took out some of the leadership, one has to ask oneself if their own remaining leadership really has the level of control we have, and even we have hiccups?
Meaning, the boss says one thing, the underlings just do whatever the hell they want.
This causes for a case of the “strategic corporal.” https://en.wikipedia.org/wiki/Three_Block_War
Where some lowly nugg takes it upon himself to do something which has strategic / national implications and goes contrary to their national laws, policies, orders, social norms...
Why in the past you had direct lines of communications for the most senior leaders between the US and Russia. You could literally have one side pick up the phone and ask the other guy “WTF?” And if the other side say’s “I dunno,” you might have a situation where if you react to fast you set wheels in motion that are going in the completely wrong direction.
To fix this, of course would be easy. If you have someone step out of line, immediately point this out to the other side (transparency) and take appropriate action to remedy this, discouraging others by punishing the one who did this. Also, there needs to be a “senior leader channel of communication” between both sides to head off mistakes because trust is very low and there is a lot of pressure to take immediate action.
If the Iranians really wanted to adhere to the agreement, they would establish an authoritative contact as you suggest. Unfortunately, I believe that they want to keep the Strait closed as that is their only leverage.
We need to reimpose the embargo on Iranian oil until the Strait is fully reopened.