Iran will export most of its enriched uranium stockpile to Russia in the coming days as it rushes to implement a nuclear deal and secure relief from international sanctions, Tehran's nuclear chief was quoted as saying on Saturday. Under the terms of the deal it reached in July with world powers, Iran must reduce its stockpile of enriched uranium to around 300 kg (660 lb), mothball most of its centrifuges, and remove the core of a heavy water reactor at Arak so it cannot be used to produce plutonium.

Tehran, Iran Travel Ink | Gallo Images | Getty Images

"In the next few days around nine tonnes of Iran's enriched uranium will be exported to Russia," nuclear chief Ali Akbar Salehi was quoted as saying by state news agency IRNA. That is roughly the amount that Iran must export to bring its stock down to the required level.

