"Iran will not go back on its rights on the nuclear issue," Gholamhossein Elham said, in the first comments from Tehran since it handed over a response to an international bid to end the nuclear standoff.
"The will of the Iranian people is firm and will continue to follow the principles defined by the supreme guide (Ayatollah Ali Khamenei)," the spokesman said at a weekly news conference.
"Iran insists on negotiations (with world powers) while respecting its rights and avoiding any loss of international rights," he said, referring to Tehran's refusal to give up on nuclear enrichment.
Iran on Friday delivered its response to an package drawn up by six world powers offering Iran technology and negotiations if it suspends uranium enrichment, which the West fears could be used to make atomic weapons.
