Iran's Foreign Ministry spokesman Abbas Mousavi said that US sanctions on Iranian metals are against international norms.
"This US measure is against the international commitments of this regime… It is against international norms… The United States will be responsible for the caused losses," Abbas Mousavi said as quoted by the ISNA news agency.
Prior to that, Iranian President Hassan Rouhani sent a letter to Joint Comprehensive Plan of Action (JCPOA) signatory states, notifying them that Tehran would give the parties of the accord 60 days to return to the negotiating table and ensure that Iran's interests are protected under the agreement. Otherwise, he said, Tehran will resume uranium enrichment prohibited under the agreement.
On 8 May 2018, Trump announced his decision to leave the 2015 Iran nuclear deal and reinstate wide-ranging sanctions on Tehran, including secondary sanctions against companies and financial institutions of countries that do business with the Islamic Republic.