The son of slain Iranian nuclear scientist Mohsen Fahrizadeh says his father told him that Iran has reached a level of knowledge that makes a nuclear bomb look like a "joke."
He said he once asked his father, half jokingly, if Iran really had a nuclear bomb.
His father replied: "Son, we have reached a level of knowledge compared to which a nuclear bomb is a joke," and added that "the future war will not be a nuclear war."
The son said any nuclear-related work was defensive, focusing on what Iran would have to do if it came under nuclear attack.