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Iran faces August deadline to accept comprehensive nuclear deal or face renewed UN sanctions

By Louis Casiano

Published July 16, 2025

Fox News
Iran vows to retaliate if US orders future attacks Video

Iran has until the end of August to agree to a nuclear deal with the United States and its allies, Fox News has learned. 

Secretary of State Marco Rubio and the foreign ministers of France, Germany and the United Kingdom set the de facto deadline, according to three sources with knowledge of a call Wednesday among the officials. 

If Tehran fails to agree to a deal, it would trigger the "snapback" mechanism that automatically reimposes all sanctions previously imposed by the United Nations Security Council. 

IRAN'S LEADER THREATENS 'EVEN BIGGER BLOW' AGAINST US; TRUMP SAYS HE'S IN ‘NO RUSH’ TO TALK

Secretary of State Marco Rubio testifies

Secretary of State Marco Rubio spoke with his European counterparts about Iran being given a deadline to accept a nuclear deal.  (Reuters/Jonathan Ernst)

The sanctions were lifted under the 2015 Iran deal. 

The Trump administration has tried pressuring Iran to accept a deal to walk back its nuclear program after U.S. and Israeli strikes targeting nuclear sites. 

United Against Nuclear Iran, a nonprofit that opposes Tehran's effort to develop a nuclear weapon, applauded Wednesday's news. 

IRAN VOWS RETALIATION IF UN SECURITY COUNCIL ISSUES SNAPBACK SANCTIONS ON ANNIVERSARY OF NUCLEAR DEAL

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"Tehran has learned that, for the Trump administration, a deadline means a deadline," UANI Chairman and former Florida Gov. Jeb Bush and CEO Ambassador Mark D. Wallace said in a joint statement. 

"After failing to agree to a deal within 60 days of diplomacy, the United States and Israel undertook targeted military action against the regime in June. Consequently, Tehran should take this new deadline seriously."

On Monday, Iran warned it would retaliate if the U.N. Security Council imposes the snapback sanctions. 

"The threat to use the snapback mechanism lacks legal and political basis and will be met with an appropriate and proportionate response from the Islamic Republic of Iran," Foreign Ministry spokesperson Esmaeil Baghaei claimed during a press conference, according to a Reuters report.

Iran negotiates with Europe, rejects nuke talks with US Video

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Baghaei didn't specify how Tehran would retaliate. 

Louis Casiano is a reporter for Fox News Digital. Story tips can be sent to louis.casiano@fox.com.

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