“The deal we have made with Tehran works. It is a document that is more than 100 pages long, in which Iran has made very specific commitments and which is under constant scrutiny by the IAEA,” Mogherini told euronews.

“Up until now, the Agency (IAEA) has conducted nine positive checks. You do not dismantle a nuclear deal that works. It’s a question of priority for the security of Europe and the whole region. President Trump has announced a US strategy on Iran which casts doubt on the deal, and we have reminded our American friends that the deal does not belong to one state or another, but that it is a UN Security Council resolution, and that we expect all parties to fully respect it.”

The remarks came as concerns have been growing in recent months that the US administration may unilaterally scrap the nuclear agreement between Iran and the Group 5+1 (Russia, China, the US, Britain, France and Germany).

In a major confrontational stance against Iran on October 13, US President Donald Trump refused to certify the multilateral deal on Tehran’s peaceful nuclear program.

Speaking from the White House, Trump said he will choose not to certify that Tehran is complying with the agreement.

The 159-page nuclear agreement was reached in July 2015 and came into force in January 2016.

Since the historic deal was signed in Vienna, the IAEA has repeatedly confirmed the Islamic Republic’s compliance with its commitments under the JCPOA, but some other parties, especially the US, have failed to live up to their undertakings.

But her optimistic tone appeared sharply at odds with the realities on the ground in a crisis that has seen 620,000 Rohingya flee rape, murder and arson in Myanmar’s Rakhine state since late August, AFP reported.

Deadly attacks by Rohingya militants on August 25 sparked a massive backlash from Myanmar’s security forces that the UN says may amount to “ethnic cleansing”.

Diplomatic pressure has been growing on Myanmar, especially on its Nobel Peace Prize-winning leader Suu Kyi.

In response the country has said it is ready and willing to take back refugees, if they can “verify” they belong in Rakhine.

Mogherini, who visited refugee camps in Bangladesh’s Cox’s Bazar over the weekend, emerged from Monday’s talks with Suu Kyi in a positive mood.

“I found it (the talks) extremely encouraging,” she told reporters in Myanmar’s capital Naypyidaw at a meeting of Asian and European foreign ministers.

“I am very much encouraged by the possibility – that I believe is real and concrete – of Myanmar and Bangladesh” reaching an agreement for the repatriation of refugees.

The two countries have yet to strike a binding deal on repatriation.

Rights groups say a speedy and safe repatriation of significant numbers of Rohingya is highly unlikely since large numbers are still fleeing violence, fear and hunger on a daily basis.

The status of the Muslim minority also remains highly emotive in Buddhist-majority Myanmar, where they are denied citizenship and labelled “Bengalis”, or illegal immigrants from Bangladesh.

Rohingya villages have been razed and rice fields commandeered or left to ruin, raising major questions over what they can return to.

Hundreds of thousands of Rohingya, pushed out of Myanmar in several previous army-backed operations, have also yet to return despite decades-old repatriation deals with Bangladesh.

Those who have fled Rakhine in recent months have told horrific stories of rape, murder and arson by Myanmar troops and ethnic Rakhine Buddhists.

Myanmar’s military denies the allegations.

Washington’s top diplomat Rex Tillerson last week cited “credible” reports of atrocities since late August.

Myanmar’s diplomatic isolation over its treatment of the Rohingya has been eased by China, which has helped shield it from censure at the UN Security Council.

China was one of the few foreign friends of the country’s former junta.

Beijing covets access to Myanmar’s western coast for ports and pipelines including in Rakhine state, where Chinese businesses are spending billions of dollars.

On Sunday Foreign Minister Wang Yi met Suu Kyi and reaffirmed support for Myanmar over the Rakhine issue, according to the state-backed Global New Light of Myanmar newspaper.

He added that “poverty alleviation” was the crux of the problem and urged Myanmar and Bangladesh to solve the crisis through “dialogue”.

In a message on Monday, Mogherini extended condolences to the people and governments of Iran and Iraq over the earthquake, offering the EU’s “support in anyway considered useful”.

At least 348 people have been killed and 6,000 injured in the quake measuring 7.3 on the Richter scale.

Iranians, fighting time, hurried early Monday to dig out survivors trapped in dozens of collapsed buildings in the quake, whose epicenter was near Halabjah, southeast of Iraq’s Sulaymaniyah.

Hospitals in the western cities of Eslamabad-e-Gharb, Sarpol-e-Zahab, and Qasre-e-Shirin are packed with the injured people as the death toll is expected to rise.

“I got clear indications that the intention is to keep the United States compliant with the agreement,” Mogherini said at a press conference on a visit to Washington on Tuesday, Reuters reported.

“I made clear any outcome of any process … has to be, at the end of the day, compliant with the deal,” she added.

Mogherini said she had voiced her readiness to help lawmakers “find solutions that are compatible” with US compliance under the agreement.

On October 13, Trump in a major confrontational stance against the Islamic Republic of Iran refused to certify the deal, known as the Joint Comprehensive Plan of Action (JCPOA).

The 159-page nuclear agreement between Iran and the Group 5+1 (Russia, China, the US, Britain, France, and Germany) was reached in July 2015 and came into force in January 2016.

Since the historic deal was signed in Vienna, the IAEA has repeatedly confirmed the Islamic Republic’s compliance with its commitments under the JCPOA, but some other parties, especially the US, have failed to live up to their undertakings.

“There is no need to renegotiate parts of the agreement because the agreement is concerning a nuclear program and as such is delivering,” Mogherini told reporters on Wednesday, following a UN meeting of the Group 5+1 (Russia, China, the US, Britain, France and Germany) that negotiated the deal, known as the Joint Comprehensive plan of Action (JCPOA), with Iran.

“We have all agreed that all sides are implementing so far the agreement,” she added.

US Secretary of State Rex Tillerson joined Iranian Foreign Minister Mohammad Javad Zarif for a first meeting with partners backing the JCPOA.

US President Donald Trump has threatened to scrap the deal unless it is re-opened for negotiations. On Wednesday, Trump told reporters that he had reached a decision, but did not elaborate.

Trump is due to report to the US Congress by October 15 on whether he can certify that Iran is upholding its side of the accord, under which it accepted limits on its nuclear programme.

In his address to the UN General Assembly, the president on Tuesday called the nuclear deal “an embarrassment” for the United States and Tillerson later confirmed that the agreement must be “revisited.”

But Mogherini, who chaired the meeting, argued that it would be unwise to re-open the deal at a time when the world is facing a nuclear threat from North Korea.

“We already have one potential nuclear crisis. We definitely do not need to go into another one,” she said.

Iranian President Hassan Rouhani told the UN General Assembly earlier that the nuclear deal was endorsed by the UN Security Council and its fate could not be decided by “one or two countries.”