He added “Iran has the capability to build nuclear bomb but it has no decision” to do so.

Enriching uranium to 20 percent was “more difficult” but increasing it to 60 percent was done in 2-3 days.

Therefore, he said, it will not be difficult to enrich uranium to purity of 90 percent.

“We’re a screwdriver’s turn away from reaching the 90% purity,” Kharrazi remarked.

Leader of the Islamic Revolution Ayatollah Khamenei has banned production of nuclear arms.

The former foreign minister reiterated Iran’s long-held policy, saying nuclear weapon “contravenes” Iran’s religious “beliefs” and its „security exigencies“.

However, he added, mastering the nuclear technology and having the capability to build nuclear arms is “deterrent”.