Assuming you are in the loop about the fact there's a war ongoing, Iran has a fractured leadership right now (by design, so they are not vulnerable to decapatitation attacks), and the US is lead by one of the most finicky and unscrupulous individual to lead a world power since WW2.

That looks like Iran employing its primary piece of leverage to try to get what it wants. It's sort of like training a dog, it does something you don't like, you punish it with strait closure. It does what you want, you reward it with strait opening.

Iran doesn't really have a huge amount of wiggle room, there's only so many ways they can inflict pain on their opponents. This is one of them, so they're using it.

I will admit it does resemble the animated shenanigans of a certain wascally wabbit.

Michael Scott with the snip snap vasectomies

Iran has a bunch of protests over their government. The US and Israel use this as a pretext to bomb the fuck out of them "for humanitarian reasons" (because Israel has a hate boner for Iran).

Iran closes the straight of Hormuz (a major shipping traffic lane that runs through Iran's Exclusive Economic Zone (their national waters)).

Iran closes the Straight of Hormuz in retaliation against Israel, The US and any US allies that support the US and Israel's bombing of their country.

Pakistan uses diplomacy to bring the US and Iran to the bargaining table to talk Peace. Iran agrees to open the Straight for shipping traffic contingent on a cease fire agreement. US agrees without talking to Israel. Israel breaks cease fire agreement. Straight closes again. Rinse and repeat.