In a letter to President Ebrahim Raisi published on Sunday, Iran's parliament has laid out six conditions for Tehran to rejoin the 2015 Iranian nuclear deal, formally known as the Joint Comprehensive Plan of Action (JCPOA), with global powers, the country's official IRNA news agency reported.

The letter, signed by 250 out of 290 parliamentarians, states that the U.S. and European parties should guarantee that they would not exit a revived agreement, nor trigger the "snapback mechanism" under which sanctions on Iran would be immediately reinstated if they found Iran fails to honor its obligations under the deal.

"We have to learn a lesson from past experiences and put a red line on the national interest by not committing to any agreement without obtaining necessary guarantees first," lawmakers said in the letter.

The letter claims the U.S. and its followers – France, Germany and the United Kingdom – have shown they are not bound by any agreement over the past few years, so Iran must learn from the experience and set clear red lines.

Iran's parliament also made it a condition that a return to the deal should only go ahead if all sanctions were lifted, including those pertaining to terrorism, missile technology and human rights.

In addition, lawmakers first want to confirm that Iran receives money from its exports before the government returns to nuclear compliance, the statement added.

To ensure effective implementation of their demands, the legislators called for an unspecified "verification" process, after which Iran would act to scale back its nuclear advances to come into full compliance with the terms of the JCPOA again.

Iranian Foreign Minister Hossein Amir Abdollahian said on Saturday that the time has come for the Western countries to prove they have the "real will" to reach an agreement in Vienna in a meeting with Josep Borrell, the European Union foreign policy chief, on the sidelines of the 58th Munich Security Conference in southern Germany. 

He said Iran has submitted all possible initiatives and proposals, and now it is time for the United States, France, Britain and Germany to make the required political decisions and demonstrate their intention to reach an agreement as soon as possible.

During the phone conversation with his French counterpart Emmanuel Macron on Saturday, Raisi also noted that any possible agreement between Iran and world powers in Vienna must include removal of anti-Iran sanctions and valid guarantees for implementing commitments.

Former U.S. President Donald Trump pulled Washington out of the JCPOA in May 2018 and reimposed sanctions on Iran, which prompted the latter to drop some of its nuclear commitments one year later and advance its halted nuclear program. 

Since April 2021, eight rounds of talks have been held in Vienna between Iran and the remaining parties, namely Britain, China, France, Russia plus Germany, with the United States indirectly involved in the talks, to revive the landmark deal.

(With input from agencies)