"Iran, Turkey and other opponents of nuclear arms can cooperate on a convention on nuclear disarmament and dismantlement," Mottaki said, speaking in a meeting with Turkish Ambassador to Tehran Umit Yardim on Monday.
He pointed to an upcoming conference in Tehran on nuclear disarmament, and said that the conference is aimed at the materialization of global nuclear disarmament.
The conference, dubbed as 'Nuclear Energy For All, Nuclear Weapon For None', will be held in Iran on April 17-18.
Foreign ministers, representatives and nuclear experts from 60 countries are due to participate in the event to discuss challenges on nuclear disarmament, countries' commitments to the issue and the aftermaths of not destroying weapons of mass-destruction.
Reminding the US atomic attacks on Hiroshima and Nagasaki that left hundreds of thousands of victims, Mottaki stated, "We should never assume nuclear arms as defensive weapons."
"In case nuclear weapons are used, nothing will be left for defense. This weapon has no use except for destruction and demolition," the Iranian foreign minister said.
The comments by Mottaki came a week after US President Barack Obama threatened Iran with nuclear weapons.
Elsewhere Mottaki pointed to Iran-Turkey ties, and said, "Iran and Turkey share common concerns at the regional and international levels, and they, thus, need to establish continued consultations in different fields."