No, it
is not irrelevant to setting current policies.
1). The CIA destroyed the Democratic government of Iran.
2). The US then put in their Fascist puppet Shah. He rutinely murdered his own people who protested against him.
3). The Islamic Revolution threw the Americans out of their country led by Khomeini.
4). Khomeini was good for his population in some aspects but not so good in other aspects.
5). Khomeini none-the-less tried to normalize relationships with US ON MANY OCCASIONS but the US refused.
6). At the time of the attack on 7/11 Iran offered to assist the US in locating Osama bin Laden but the US refused Iran's help.
7 to infinity). Iran has tried to cooperate with the US but the US has refused each and every time.
THE BOTTOM LINE: History
is not irrelevant to setting current policies.
It is an absolute necessity for Iran to have nuclear weapons.
I suggest that you don't. You won't be getting any sleep anyway.