Luxembourg's top diplomat touched upon the European Union's efforts to secure Iran's benefits under the JCPOA, demanding that the agreement remain in place as an global achievement.
Washington's decision to withdraw from the deal and reimpose sanctions angered its European allies as well as China and Russian Federation.
Basravi said the Rouhani government's "political health. hangs in the balance" as the administration has "married itself to this deal and championed it as the answer to all" of the country's economic woes.
"The Europeans, after the withdrawal of the U.S. from the deal, have found themselves forced to save the Joint Cooperative Plan of Action themselves", he added.
But European diplomats in Tehran fumed that Washington's withdrawal could undermine years of patient work to restore commercial and diplomatic ties with the Islamic Republic.
Under the deal, Iran undertakes to curb its nuclear activities and place them under total control of the International Atomic Energy Agency (IAEA) in exchange of abandonment of the sanctions imposed previously by the United Nations Security Council, the European Union and the United States over its nuclear program.
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French President Emmanuel Macron has said he wants to secure a wider deal after the USA withdrawal with four pillars: limiting Iran's nuclear program in the short and the long term, restraining its ballistic missile program and curbing what the West views as its destabilizing behavior in Syria, Yemen, Iraq and Lebanon.
"As far as we are aware, the European troika, China, Iran and Russian Federation have announced their plans to comply with the JCPOA", Lavrov said Monday.
"Officials shouldn't trust France and Britain". It's unclear how well the measure could be enforced, given that big multinationals are likely to be doing more business in the United States than they are in Iran and may be unwilling to compromise that market access.
A photo on the official Instagram site of supreme leader Ayatollah Ali Khamenei showed him reading a Farsi translation of Michael Wolff's scabrous account of the Trump White House, "The Fire and the Fury", quickly picking up more than 100,000 likes. "He is hopeful we can continue strong cooperation".
The top Iranian diplomat made the comments at a meeting on Monday with his Russian counterpart, Sergei Lavrov, in Moscow, the second destination on his diplomatic tour aimed at saving the nuclear deal, officially called the Joint Comprehensive Plan of Action (JCPOA).
But analysts said Iran was determined to maintain the moral high ground in the coming weeks.