Iranian Foreign Minister Hossein Amir-Abdollahian confirmed on Wednesday that, "the European Union continues efforts to revive the nuclear agreement." 

During his visit to the Sultanate of Oman, Amir-Abdollahian stressed that, "the window for negotiation that is open today will not remain open tomorrow if the United States and others do not stop the hypocrisy." 

Iran's top diplomat pointed out that, "the Sultanate of Oman has been the main mediator since the beginning of the negotiations."

Read more: Iran nuclear deal is not our focus right now: White House

Earlier today, the National Security Committee in the Iranian Parliament denied Tehran's intention to make any concessions in the nuclear negotiations, noting that "the Europeans' perceptions of the nuclear negotiations are inaccurate."

The committee added that, "the revival of the JCPOA can be achieved by Tehran, but the outcome depends on the realism of the other side."

"The American side is the one that withdrew from the nuclear agreement, then announced its willingness to return to the agreement again, and the conditions for the Americans' return were the focus of negotiations a year and a half ago."

Amir-Abdollahian warned international powers earlier last week that a window for reviving the 2015 nuclear deal, previously known as the Joint Comprehensive Plan of Action (JCPOA), remains open but not forever.

"The window is open, but not forever," he said.

It's noteworthy that Amir-Abdollahian and the High Representative of the EU for International Relations and Security Policy, Josep Borrell, met on December 20 in Amman to discuss the progress of talks aimed at resurrecting the 2015 nuclear agreement.