FNA- Iranian Foreign Ministry Spokesman Bahram Qassemi blasted US President Donald Trump for his unilateral move to withdraw from the 2015 nuclear deal, warning that Washington will sustain the most damage from the move.

"The main loser is no country but the US and we will not lose anything. But certainly, we can foresee the day the US will regret its deed and it will not take long," Qassemi told FNA on Wednesday after Trump declared his country's abrogation of the nuclear deal and re-imposition of sanctions against Iran.

He said that the US move sent a clear and important message to the world that the US is not trustworthy, adding that Washington also insulted its partners in the Group 5+1 (Russia, China, Britain, France and Germany) and the International Atomic Energy Agency (IAEA) which had 11 times endorsed Iran's commitment to its undertakings based on the nuclear deal.

Qassemi also rejected Trump's terrorism allegations against Iran, noting that Washington is itself one of the promoters of extremism and terrorism in the world with the help of its puppets like Saudi Arabia, an issue admitted by Trump himself clearly during his presidential campaign, while Iran has in the past few years helped the regional states gain victory against the terrorist groups.

He underlined Iran's contacts with the European states, China and Russia to study the new situation after the US withdrawal from the nuclear deal, and said Europe has informed Tehran of its willingness to continue implementation of the nuclear deal.

Qassemi said that the Atomic Energy Organization of Iran (AEOI) has also received necessary orders to prepare for a possible situation where Iran and the EU will not be able to reach an agreement on the nuclear deal minus Washington.

He expressed confidence that the stockpiles of weapons collected by certain reactionary regional countries and Israel's measures would not affect the strong will of the Iranian nation and the regional people, stressing, "The final winner of this scene will be the Islamic Republic of Iran."

Asked about Iran's contracts with giant companies, including Total, Qassemi said that the European states have shown that they don�t accept other countries to impose their policies against them and they can find mechanisms which protect them against the US internal laws.

Trump announced on Tuesday that the US would no longer remain part of the Joint Comprehensive Plan of Action (JCPOA) and promised to re-impose the highest level of economic sanctions against Iran in response to Tehran's development of its nuclear program.

After Trump's declaration, Iranian President Hassan Rouhani said he has ordered his atomic chief to stay on alert to resume suspended nuclear activities, stressing that Tehran will stay in the Joint Comprehensive Plan of Action (JCPOA) with other signatories if only other parties to the deal ensure all its interests and economic merits.

While stressing that Trumps decision was a historical experience for Iran, Rouhani noted that the US president has a history of undermining international treaties. Rouhani also noted that Iran would remain in the nuclear deal without the US' presence for the next few weeks to see results of negotiations with Europeans.

Rouhani added that he has ordered the Atomic Energy Organization of Iran (AEOI) to be prepared for resuming nuclear enrichment at the industrial level.

"I have ordered AEOI to go ahead with adequate preparations to resume enrichment at the industrial level without any limit," he said.

He further added that from now on everything depends on Iran's national interests.

"Trump's decision was the beginning of a psychological war against Iran, our heroic people will not be affected by this psychological attack," said Rouhani.

Rouhani also noted that from now on the JCPOA is between Iran and the five remaining countries, but stressed that Iran would stay under the deal if all its interests are met.

He further noted that the Iranian Foreign Ministry would be negotiating with European countries, Russia, and China in the coming weeks.

Also, Foreign Minister Mohammad Javad Zarif responded to Trump's move, referring to it as "unlawful", while adding that the outcome of further diplomatic efforts will determine Iran's response.

In response to US persistent violations and unlawful withdrawal from the nuclear deal, as instructed by President Rouhani, I'll spearhead a diplomatic effort to examine whether remaining JCPOA participants can ensure its full benefits for Iran. Outcome will determine our response.

"In response to US persistent violations & unlawful withdrawal from the nuclear deal, as instructed by President Rouhani, I'll spearhead a diplomatic effort to examine whether remaining JCPOA participants can ensure its full benefits for Iran. Outcome will determine our response," he tweeted.

The European Union, France, Britain and Germany have expressed regret over Trump's decision about the deal.

Iran has on numerous occasions asserted that its nuclear program is merely peaceful and not meant to make nukes.