“If there is no agreement and negotiations collapse, there is no choice but to restart the program,” Kharrazi told reporters in The Hague after talks with his Dutch counterpart Bernard Bot.
Iran is due to hold talks in London on Friday with Britain, France and Germany, who want Iran to give up uranium enrichment in return for incentives such as trade deals.
Iran, which insists its nuclear ambitions are limited to the peaceful generation of electricity, says uranium enrichment is a sovereign right it will never renounce. Four months of talks have not changed Tehran’s position.
“Iranian people fear a delay. They believe it is their inalienable right to have access to this technology for peaceful purposes,” Kharrazi said.