Iran backed down and released the Mesdar after giving it a “safety warning”
imho the Mesdar was boarded to make sure the igrc got a tanker if one of the attempts failed.
they got one so the other was released.
this is all ‘diplomacy’ stuff at this point.
the interesting item is that iran claims boarding rights for ‘ecological and regulatory’ purposes. A treaty probably gives them that right.
once they’re aboard the tanker is defenseless though.