It's really funny. When sunnis need help, they chant muslim brotherhood between shiites and sunnis, but when shiites are in difficult positions, then shiites are called Rawafidh by sunnis. I know this hypocrisy very well.
AQ khan stole that 70's technology from Netherland, and later sold it to Iran and received cash in return. It was a business(not a gift), and it was very bad for Iran, since finally the other customer of AQ khan(gaddafi), exposed what was going on, which later resulted in a decade of sanctions and billions of dollars of damage to Iranian economy.