The Foreign Ministry spokesman said the upcoming visit of US officials to the UN nuclear watchdog's headquarters probably aimed at achieving the US President Donald Trump's declared goal of killing the 2015 nuclear deal will get them nowhere.
US Ambassador to the United Nations Nikki Haley will travel to the International Atomic Energy Agency's base in Vienna later this month to "further explore the extent of Iran's nuclear activities" with IAEA officials, Reuters quoted a US official as saying on August 9.
The IAEA monitors limits placed on Iran's nuclear activities under the nuclear deal, through what has been described as the most extensive nuclear inspections and monitoring regime in history.
Qasemi said the IAEA has repeatedly confirmed Iran as complying with the multi-party accord, and this assessment is not to change in the future.
"If they seek to damage JCPOA, I think this would prove a vain bid, as the agency is carefully performing its tasks and future reports will verify Iran's compliance again," ISNA quoted him as saying in a regular press briefing in Tehran on Monday.
The spokesman was referring to the Joint Comprehensive Plan of Action, the formal title of the deal, which is frequently hammered by Trump who has hardened the US tone on Iran and imposed sanctions one after another since coming to power in January.
***Deal Underpinned by Broad Support
Qasemi said the support by other signatories to the deal will prevent Trump from fulfilling his professed wish to "dismantle" the accord, although he acknowledged that the US efforts could "create some problems".
The other sides of the two-year deal, namely the UK, France, China, Russia and Germany, are apparently in consensus over the need to protect the deal that settled a 12-year dispute between Iran and western governments accusing it of seeking nukes.
The IAEA could not find evidence confirming the western allegations despite conducting numerous inspections on Iran's nuclear sites, even military bases.
The unnamed US official told Reuters the trip was part of Washington's review of Tehran's compliance with the deal.
Under the US law, the State Department must notify Congress every 90 days of Iran's adherence to the pact.
The next deadline is October and Trump has said he thinks by then the US will declare Iran to be noncompliant.
Last month, Foreign Policy reported a White House source that Trump has instructed a group of White House staffers to provide him with options to declare that Tehran was not in compliance with the agreement in October.
Also last month, AP reported senior US officials as saying the Trump administration was to push for inspections of Iranian military sites by alleging suspicious nuclear activities there.
Under the deal, the IAEA is in charge of conducting such inspections, but it first needs to provide Iran with a logical explanation for doing so and Tehran can propose alternatives to on-site inspections.
In April, Trump ordered a review of whether it is in the US interests to stop adhering to its nuclear deal commitments.
