... Iran has never asked any country including Pakistan for nukes, nor did Iran hand over anything to U.S, be it Pakistani centrifuge designs or anything else. It was never proved that Iran was after a weapon, let alone admitting it.
Iran took some 1st generation, used centrifuges from Pakistan to help develop a fully domestic nuclear program and also to have the option of making a weapon in case another mad man like Saddam Hussein tried to develop nukes and threaten us (he was actively pursuing nuclear weapons in 80s, but Iraq's weapon facilities were bombed by both Iran and Israel), but we never went for the weapons to begin with and Saddam was toppled in 2003. ...
Need I say more my Persian brother?