"Today, America is identified as an unreliable and untrustworthy country in the world which does not adhere to any of its obligations", Rouhani said.
"Our policy is based on a clear-eyed assessment of the Iranian dictatorship, its sponsorship of terrorism, and its continuing aggression in the Middle East and all around the world", President Trump stated.
Since it unilaterally pulled out of the deal in May, Washington has told other countries that they must halt all imports of Iranian oil from November 4, or face U.S. financial measures.
Iran's foreign minister Javad Zarif turned the tables on Washington's efforts to isolate the regime, saying Monday that it is in fact the US, Israel, and Saudi Arabia who are isolated in their hostility towards Iran.
USA officials have said in recent weeks that they aim to reduce Iran's oil exports to zero as a means of pressuring Tehran to halt its nuclear and missile programmes and involvement in regional conflicts in Syria and Iraq.
Mr Zarif said European powers - who say the nuclear deal is working - were asking other countries to continue buying Iranian oil or even start doing so when the next batch of USA sanctions take effect. Donald Trump claimed they were "the most biting ever imposed" and warned that in November, sanctions would "ratchet up to yet another level" with an embargo on Iranian oil and blanket sanctions on Iranian banks.
Rouhani hinted last month that Iran could block the Strait of Hormuz, a major oil shipping route, if the USA attempted to stop the Islamic Republic's oil exports.
Courtois wants to move back to Spain for ‘family reasons’
And new manager Sarri is keen to resolve their situations in person with both having hinted at a desire to leave Stamford Bridge. The London club feel that offer is derisory given Courtois' quality despite the short amount of time left on his deal.
Zarif did not specify what consequences the US could face.
"If the Americans want to keep this simplistic and impossible idea in their minds they should also know its consequences, " Zarif said". "There is no doubt about this", Khamenei was quoted as saying in comments that appeared only a day after the new us sanctions took effect. Zarif told the state-owned IRAN daily, however, there are now no ongoing talks between the countries.
Just one day after the United States issued their first set of sanctions were issued, Ms Mogherini said: "We are doing our best to keep Iran in the deal, to keep Iran benefiting from the economic benefits that the agreement brings to the people of Iran, because we believe this is in the security interests of not only our region but also of the world".
Already facing broad economic fallout as their currency implodes, Iranians are wondering how the next phase of the crisis in United States relations will play out - and what, exactly, America's long-term strategy is toward their country.
The Trump tactics have deepened an already serious economic crisis in Iran, fuelling protests around the country.
Russia, which remains a signatory of the 2015 deal along with the European Union and others, also slammed the US sanctions on Iran.