However, the Western countries are still “telling lies” about Iran’s peaceful nuclear program, Ayatollah Kashani told worshipers in Tehran.

He went on to say that the enemy has always made efforts to impede Iran’s progress, particularly after the Islamic Revolution.

Iran’s chief nuclear negotiator who had visited China also said Tehran has observed all its nuclear obligations.

“Tehran lived up to its commitments in building confidence (over its nuclear program) and observing international regulations,” Saeed Jalili told a number of researchers and political analysts at China’s international research institute on Friday.

He added Iran will soon host an international conference on Peaceful Nuclear Energy for All and Nuclear Weapons for None”.