The first round of the meetings of the Joint Working Committee of the Nuclear Agreement, which began its work today in Vienna under the auspices of the European Union, has ended with the participation of the United States for the first time since the arrival of President Joe Biden's administration to the White House.

The Iranian Foreign Ministry announced the end of the first round of these talks between Tehran and the "4 + 1" group, within the framework of the Joint Committee of the Nuclear Agreement.

The Iranian Foreign Ministry indicated that it was agreed to hold two meetings at the level of experts, to discuss the lifting of sanctions and technical measures related to the Iranian nuclear program.

On the other hand, Iranian Assistant Foreign Minister Abbas Araghchi said that the lifting of US sanctions is the first and basic step to revive the nuclear agreement, and that his country is ready to implement all its nuclear obligations after making sure that the sanctions are effectively lifted.

For his part, the representative of the European Union said that the meeting was positive and constructive.

While the US envoy to Iran Robert Malley said that Tehran's position on lifting sanctions before changing its nuclear activities shows its lack of seriousness.

He added that the talks in Vienna were a first step in a long and difficult path, aimed at returning the United States and Iran to compliance with the agreement.

Speaking on National Public Radio, he confirmed that the Vienna talks include discussions about determining the steps that Washington and Tehran should take, because the two sides have been increasingly in non-compliance with their nuclear obligations.

Al-Jazeera correspondent in Vienna, Abdullah Al-Shami, said that the committees that were formed after the end of the first meeting began their work immediately, and sought to discuss two matters, one of which was to discuss the lifting of sanctions on Iran, and the second related to technical measures related to the Iranian nuclear program.

He said that the experts who participate in these meetings will provide a complete picture of what the work will be like.

Iran has steadily exceeded restrictions imposed by the agreement on its nuclear program, in response to Washington's withdrawal from it in 2018 and its re-imposition of sanctions that crippled the economy of the Islamic Republic.

Tehran has repeatedly rejected "direct and indirect negotiations" with the United States, and Washington said on Monday it expected the talks to be difficult.

Neither country expects a quick breakthrough.

"We are confident that we are on the right path, and if the will of the Americans, their seriousness and sincerity is confirmed, this may be a good sign for a better future for this agreement," Iranian government spokesman Ali Rabiei told reporters.

The administration of US President Joe Biden wants to revive the nuclear deal, but says that this requires negotiations.

Iran has so far refused to enter into any direct talks with Washington regarding the resumption of compliance by the two parties with the agreement.

The US sanctions and other economic sanctions imposed on Tehran were lifted under the agreement in exchange for imposing restrictions on the Iranian nuclear program, making it difficult to develop a nuclear weapon, an ambition that Iran denies its aspiration to achieve.