With the US building up its military presence in the Persian Gulf, Iran's ambassador to the UN says the country "will stand firmly against any act of aggression" even though it does not seek war.  

One year after US president unilaterally withdrew the US from the Iran nuclear deal and reinstated sanctions, Tehran has announced counter measures.

Iran says it will soon start re-building the Arak heavy water reactor once China finishes examining the last phase of the re-designing process.

Iran is in talks to sell more heavy water after sales to the United States, Russia, and other countries, the spokesman of the country's nuclear organization says.

Tehran has to sell its surplus heavy water under the 2015 nuclear agreement with world countries which requires that the inventory should not exceed 130 tonnes.

The IAEA once again confirms that Iran remains in compliance with its commitments under the JCPOA.

Iran and China have signed a technical contract to begin the process of redesigning the Arak heavy water reactor.

Iran and China sign the final version of a contract to redesign and modernize the Arak heavy water reactor in central Iran.

Iran says the JCPOA imposes no obligation on Iran to ship its excess heavy water abroad.

Iran is considering requests from some European states to buy heavy water from the Islamic Republic.