A quarterly International Atomic Energy Agency report Thursday said Iran is honoring key aspects of the deal that the United States, China, Russia, France, Germany, Britain and the European Union reached with Iran in exchange for the lifting of sanctions that hobbled the Islamic Republic's economy.
He's already refused to recertify the deal (as the president is required to do every three months under USA law), which means Congress can snap back US sanctions on Iran.
"Peoples' expectations from the JCPOA are not met, it's a fact", he said.
Speaking in London, Abbas Araghchi argued that US President Donald Trump's repeated criticisms of the deal were causing an unstable environment for foreign investors.
"I don't think the deal can survive in this way, if the atmosphere of confusion continues, if companies or banks will not cooperate with Iran".
Despite that, big banks have continued to stay away for fear of falling foul of remaining USA sanctions - something that has hampered Iran's efforts to rebuild foreign trade and lure investment.
Speaking at the Chatham House think tank in London, Iran's Deputy Foreign Minister Abbas Araghchi said the deal can not "survive this way", according to a Reuters report on his comments.
Supreme Leader Ayatollah Ali Khamenei echoed these statements, saying, "Our policy will not change with regards to the arrogant USA government". Obama said at the time that the nuclear deal was a moment of "historic understanding" between Iran and the US.
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In this October 13, 2017 file photo, President Donald Trump makes a statement on Iran policy in the Diplomatic Reception Room of the White House in Washington.
The gains, he said, on Iran's part, are less economic and more political.
"Now two years since the implementation of the deal it has become clear that those warnings have been true", said Hashemi.
The report comes four months ahead of a deadline set by President Donald Trump for Congress and European allies to fix what he called "disastrous flaws" in the deal or face a US withdrawal from the deal.
Iran has raised that prospect in public statements before.
"If we lose the JCPOA, we will face another nuclear crisis", Mr Araqchi said.
President Trump has pointed out three major issues he sees in the Iran nuclear deal.
"If the US and Iran are not on the same page with regards to Iran's nuclear program, regardless of what the construct of the program looks like, it's going to be a point of contention because the United States is going to use coercive measures to punish Iran for having its program", he said. Although the United States administration and President Donald Trump "are talking about a sunset clause and that JCPOA is just for 10 years, that is not true", Araqchi said. "Iran's commitment in the JCPOA not to go for the nuclear weapon is permanent", he added. But mentioning it evokes both projecting military might and potentially enriching uranium beyond the limit of 3.67 percent purity imposed by the deal.