The United Nations Security Council on Monday endorsed a historic deal reached between Iran and the major powers in Vienna last week.
The 15-member body unanimously adopted a resolution that was negotiated as part of the agreement.
In return for lifting US, EU and UN sanctions, Iran will be subjected to temporary constraints on its nuclear activities.
It says the sanctions relief will be implemented when the International Atomic Energy Agency submits a report to the Security Council verifying that Iran has taken certain nuclear-related measures outlined in the agreement, according to Reuters.
Under the deal, Iran and the P5+1 (the United States, Russia, China, Britain, France and Germany) do not need to take any practical action for 90 days as the Iranian Parliament and the US Congress review the accord. Then the six powers are required to begin preparations so they are able to lift sanctions as soon as the IAEA verification report that Iran has implemented the required measures is submitted.
The European Union also approved the Iran nuclear deal with world powers on Monday.
Once sanctions relief can be implemented, seven previous UN resolutions will be terminated and the measures contained in the resolution adopted on Monday will come into effect.
Deputy Foreign Minister Abbas Araqchi, a senior nuclear negotiator, told state television on Monday after the passage of the resolution Iran would issue a statement reemphasizing the policy of not recognizing the legitimacy of sanctions.
He said although the resolution cites Article 41 of the Charter of the United Nations (which is an article of Chapter VII of the Charter) in some paragraphs, it has not been drafted under Chapter VII, "so Iran's peaceful nuclear activities will no longer be considered a threat, (a fact) which is a major development."
