Tehran and Washington are expected to hold a sixth round of talks to solve a decades-long dispute over Iran’s nuclear programme, with US President Donald Trump predicting “good news”.

“It is normal that inspectors from hostile countries are not allowed, but if a nuclear deal is reached, we might allow American inspectors working for the International Atomic Energy Agency to visit our nuclear sites,” Eslami told a press conference in Tehran.

The two countries have clashed over the issue of uranium enrichment in Iran, which Washington says is a possible pathway to building nuclear weapons and must be brought to zero. Tehran maintains its nuclear programme is exclusively for civilian purposes and views its enrichment industry as a red line.

“Enrichment is the foundation and pillar of the country’s nuclear industry. Suppose someone is allowed to have an electricity substation and network, but not allowed to establish a power plant,” Eslami said.