Under the JCPOA, Iran must limit its nuclear program in exchange for the lifting of worldwide sanctions. "We have witnessed similar developments and this is their internal issue".
His comments centered on the deal addressing USA and worldwide concerns about Iran having a nuclear weapons program.
Araqchi made the statement while speaking to reporters after the 11th meeting of the Joint Commission of the Joint Comprehensive Plan of Action (JCPOA) in Vienna on Friday, according to a Farsi report by ISNA.
The proposal is part of an European Union strategy to save the accord that curbs Tehran's ability to develop nuclear weapons, namely by showing US President Donald Trump that there are other ways to counter Iranian power overseas. Senior Iranian officials have repeatedly said their missile program is not up for negotiation.
Iranian nuclear negotiator and deputy foreign minister Abbas Araghchi.
Analysts say the nuclear agreement could collapse if Washington pulls out.
Trump said in January that the nuclear deal must be "fixed" by May 12 or the United States will walk away.More news: Salmon Arm's Natalie Wilkie wins her first Paralympic gold
"There is a lot we agree on and where we disagree we are working to bridge our differences", he said in Vienna.
US President Donald Trump speaks during a joint press conference with Australian Prime Minister Malcolm Turnbull in the East Room of the White House in Washington, DC, February 23, 2018. State Department policy planning chief Brian Hook is leading the US delegation in the meeting of the so-called Joint Comprehensive Plan of Action Joint Commission, or JCPOA.
Iran, which according to the United Nations atomic watchdog has been abiding by the deal since it came into force in January 2016, has repeatedly ruled out any changes to the agreement.
The European parties to the agreement are desperate to save it and have been scrambling to find ways to persuade Trump not to rip it up.
Pompeo, head of the Central Intelligence Agency, is seen as taking a harder line on Iran.
President Trump has opposed the deal from the start, and is demanding broad changes to the already negotiated pact.