Mousavi stated that a committee was formed for that purpose at the Supreme Council for National Security.
In response to sweeping US sanctions, Tehran said Thursday it will announce details Saturday of its latest scaling back of its commitments under a 2015 nuclear deal.
Lawmakers from both U.S. parties introduced legislation to give Congress more say in any deal on civil nuclear power cooperation between the US and KSA.
Iran said on Sunday it would continue missile tests to build up its defences and denied this was in breach of U.N. resolutions.
Iranian lawyers will ask the International Court of Justice to order the United States to lift sanctions ordered by the Trump administration against Tehran.
To pave the way for talks with Iran, the United States should return to a 2015 nuclear deal between Iran and six major powers, Rouhani's aide said.
U.S. President Donald Trump said on Monday he would be willing to meet Iranian leaders without preconditions to discuss how to improve ties.
Iran will remain in nuclear deal only if its benefits are guaranteed by other signatories, Iranian President Hassan Rouhani said
Iran warned North Korean leader Kim Jong Un not to trust U.S. President Donald Trump who, it said, could cancel their denuclearisation agreement within hours.
European countries have until the end of May to propose ways to mitigate the effects of the US withdrawal from a landmark nuclear deal between world powers.
Iran has stayed within the main curbs on its nuclear activity imposed by its deal with major powers despite the U.S. pullout from the pact
Iran's top leader set out seven conditions on Wednesday for Tehran to stay in its nuclear deal with world powers.
Iran dismissed Washington's ultimatum and one senior Iranian official said it showed the United States is seeking "regime change" in Iran.
Iran's FM accused EU of not doing enough to preserve the benefits for Iran from the 2015 international nuclear pact following the withdrawal of the U.S.
Iranian Oil Minister Bijan Zanganeh said on Saturday that U.S. President Donald Trump's decision to quit a multinational nuclear deal would not affect Tehran's oil exports.
The European Union took steps Friday to avoid reimposed US sanctions on Iran and save the international nuclear deal as a rift with Washington widened.
Garhy clarified that the price of oil increased due to the regional factors, including the U.S. withdrawal from the Iranian nuclear agreement
India's oil minister expressed concern about the rise oil prices but said it was too early to predict the impact of U.S. sanctions on his country's imports.
Germany is ready to help its firms continue doing business in Iran, as the U.S. envoy to Berlin called into question the morality of such transactions
Iran said on Friday had asked Europe's Airbus to announce whether it would go ahead with its plane deal with Tehran