The carefully worded text of the 2015 nuclear pact has effectively hampered the ability of the US administration to wriggle out of its commitments, a lawmaker said.
"The JCPOA has been written well," Massoud Goudarzi told ICANA on Tuesday, referring to the historic agreement by its official name, the Joint Comprehensive Plan of Action.
"But the problem is that the action plan does not cover all the issues over which Iran has been sanctioned and it only concerns the nuclear issue. This has provided the other side space to harm the spirit of the deal."
JCPOA was signed in July 2015 between Iran and the US and its five partners and went into effect in early 2016 to end sanctions in return for rolling back Iran's nuclear activities.
Leader of Islamic Revolution Ayatollah Seyyed Ali Khamenei has ruled out negotiations with the US beyond the nuclear issue.
When campaigning for the White House, Donald Trump railed against the agreement, which is seen as a foreign policy legacy of his democratic predecessor, Barack Obama.
Trump branded it "a disaster" and "the worst deal ever negotiated" and once even promised to rip it up if he became president, although he later backed down, conceding that it would be too difficult to ditch a deal enshrined in a UN resolution. The beleaguered president later vowed to alter the terms of the agreement instead.
Harassment Tactic
Having found himself bound by the international accord, Trump has resorted to non-nuclear pretexts to tighten the screws on Tehran, Goudarzi said.
"Trump is unable to tear up the action plan, so he is using a harassment tactic to overwhelm Iran with anger and push it to violate the JCPOA."
After taking office in January, Trump on several occasions has ordered expansion of a US list of sanctioned Iranian entities and individuals over their links with Tehran's missile program and alleged support for terrorism.
US partners, namely France, Britain, China, Russia and Germany, have refused to go along Trump's tantrums to revise the nuclear agreement.
The EU has made clear that despite its difficult ties with China and Russia, it is in full agreement with the two powers regarding the need to keep the nuclear deal intact.
