Maybe their women. Iranian males are friendly in general but their women are very cold, both professionally and personally. If you have to have a meeting with an Iranian lady professional, AND you happen to be a guy from India or other subcontinent's countries, then you will be given that pitiful look like you're some inferior little puppy. They have sharp features but that is no license to treat others rudely. Although a couple of them (regrettably) confused me to be a chinese (to our Iranian friends here, we northeast Indians don't like being called chinese, it is like calling you guys as arab side kicks
same meaning), which I can understand, but on telling them I am Indian, they were looking as if I was begging them for money.
It is very distasteful.This is including western-raised Iranian ladies and Iranian resident women. In total I came across about 7-8 of them till date.
They are opposite of their males, who are much more warm-hearted and friendly.