Iran on Sunday condemned as "unjustifiable" the reinstatement of United Nations sanctions over its nuclear programme, after the collapse of talks with Western powers and Israeli and US strikes on its nuclear sites.
The measures, which bar dealings linked to the Islamic republic's nuclear and ballistic missile activities, took effect overnight after Western powers triggered the so-called "snapback" mechanism under the 2015 nuclear accord.
"The reactivation of annulled resolutions is legally baseless and unjustifiable… all countries must refrain from recognising this illegal situation," the Iranian foreign ministry said in a statement.
"The Islamic Republic of Iran will firmly defend its national rights and interests, and any action aimed at undermining the rights and interests of its people will face a firm and appropriate response," it added.
The return of the sanctions ends months of tense diplomacy aimed at reviving nuclear talks derailed since June, when Israeli and US forces bombed Iranian nuclear facilities.
Despite the reimposition, Western leaders stressed channels for dialogue remained open.
Kaja Kallas, the European Union's top diplomat, on Sunday said the reimposition of sanctions "must not be the end of diplomacy".
US Secretary of State Marco Rubio urged Iran to "accept direct talks, held in good faith".
He also called on UN member states to "immediately" implement sanctions to "pressure Iran's leaders to do what is right for their nation, and best for the safety of the world".
The British, French and German foreign ministers said in a joint statement they would continue to seek "a new diplomatic solution to ensure Iran never gets a nuclear weapon".
However, Iranian President Masoud Pezeshkian on Sunday rejected any nuclear negotiations that would cause "new problems".
"We have always declared our readiness for a logical, fair and just dialogue based on clear criteria, but we will never accept a negotiation that causes us new problems and issues," Pezeshkian said, according to ISNA news agency.
"The country is ready to face any situation," he noted, adding that "our path is to stand firm, rely on the power of the people, and move with dignity towards a bright future."
– 'No choice' –
Iran had allowed UN inspectors to return to its nuclear sites, but Pezeshkian said in previous remarks that the United States had offered only a short reprieve in return for handing over its whole stockpile of enriched uranium, a proposal he described as unacceptable.
An 11th-hour effort by Iran allies Russia and China to postpone the sanctions until April failed to win enough votes in the Security Council on Friday, leading to the measures taking effect at 3:30 am in Tehran (0000 GMT) on Sunday.
Germany, which triggered the return of sanctions alongside Britain and France, had "no choice" as Iran was not complying with its obligations, Foreign Minister Johann Wadephul said.
"For us, it is imperative: Iran must never acquire a nuclear weapon," he told the UN General Assembly.
"But let me emphasise: we remain open to negotiations on a new agreement. Diplomacy can and should continue."
Iran has long contended that it is not seeking nuclear weapons.
Newspapers in the Islamic republic gave contrasting reactions to the reimposition of the sanctions.
The ultraconservative newspaper Kayhan, which opposes dialogue with the United States, suggested the sanctions would have been imposed even if Iran had engaged in negotiations.
The reformist daily Ham Mihan wrote: "The big question is whether Russia and China will maintain their position".
Russian Foreign Minister Sergei Lavrov on Saturday made clear Moscow would not enforce the sanctions.
– Economic impact –
The sanctions are a "snapback" of measures frozen in 2015 when Iran agreed to major restrictions on its nuclear programme under a deal negotiated by former president Barack Obama.
The United States had already imposed massive sanctions when President Donald Trump withdrew from the deal in his first term.
Iran and the United States had held several rounds of Omani-brokered talks earlier this year before they collapsed in June when first Israel and then the United States attacked Iranian nuclear facilities.
On the ground, Iranians lamented the likely impact of the new sanctions on an already squeezed economy.
"The current (economic) situation was already very difficult, but it's going to get worse," said an Iranian engineer who asked to be identified only by his first name Dariush.
"The impact of the renewed sanctions is already evident: the exchange rate is increasing, and this is leading to higher prices," the 50-year-old said, complaining that the standard of living is "much lower" than it was two or three years ago.
The economic strain was underscored on Sunday when the Iranian rial plunged to a record low against the US dollar on the black market, trading at around 1.12 million per dollar, according to the currency-tracking websites Bonbast and AlanChand.
Sweeping UN sanctions return to hit Iran after nuclear talks fail
United Nations, United States (AFP) Sept 28, 2025 –
Widespread UN sanctions against Iran returned into force late Saturday for the first time in a decade, after last-ditch nuclear talks with Western powers failed to produce a breakthrough.
The sanctions, three months after Israel and the United States bombed Iran, bar dealings related to Tehran's nuclear and ballistic missiles program and are also expected to have wider effects on its troubled economy.
European and US diplomats stressed immediately after the resumption of sanctions that diplomacy was not over.
US Secretary of State Marco Rubio urged Tehran to "accept direct talks, held in good faith."
He also called on UN member states to "immediately" implement sanctions to "pressure Iran's leaders to do what is right for their nation, and best for the safety of the world."
The British, French and German foreign ministers said in a joint statement they would continue to seek "a new diplomatic solution to ensure Iran never gets a nuclear weapon."
They also called on Tehran "to refrain from any escalatory action."
Iran has allowed UN inspectors to return to its nuclear sites, but President Masoud Pezeshkian said the United States had offered only a short reprieve in return for handing over its whole stockpile of enriched uranium, a proposal he described as unacceptable.
An 11th-hour effort by Iran allies Russia and China to postpone the sanctions until April failed to win enough votes in the Security Council on Friday, leading to the measures taking effect at midnight GMT Sunday, or 8 pm on Saturday in New York.
Germany, which triggered the return of sanctions alongside Britain and France, had "no choice" as Iran was not complying with its obligations, Foreign Minister Johann Wadephul said.
"For us, it is imperative: Iran must never acquire a nuclear weapon," he told the UN General Assembly.
"But let me emphasize: we remain open to negotiations on a new agreement. Diplomacy can and should continue."
Russia made clear it would not enforce the sanctions, considering them invalid.
The sanctions "finally exposed the West's policy of sabotaging the pursuit of constructive solutions in the UN Security Council, as well as its desire to extract unilateral concessions from Tehran through blackmail and pressure," Russian Foreign Minister Sergei Lavrov said.
Iran has long contended that it is not seeking nuclear weapons.
– No longer just US sanctions –
The sanctions are a "snapback" of measures frozen in 2015 when Iran agreed to major restrictions on its nuclear program under a deal negotiated by former president Barack Obama.
The United States already imposed massive sanctions, including trying to force all countries to shun Iranian oil, when President Donald Trump withdrew from the deal in his first term.
Iran and the United States had held several rounds of Omani-brokered talks earlier this year before they collapsed in June when first Israel and then the United States attacked Iranian nuclear facilities.
Iran recalled its envoys from Britain, France and Germany for consultations on Saturday, state television reported.
"The current (economic) situation was already very difficult, but it's going to get worse," said an Iranian engineer who asked to be identified only by his first name Dariush.
"The impact of the renewed sanctions is already evident: the exchange rate is increasing, and this is leading to higher prices," the 50-year-old told AFP, lamenting a standard of living that is "much lower" than it was "two or three years ago."
The dollar was trading at around 1.12 million rials on the black market on Saturday, a record high according to several currency tracking websites.
An AFP journalist at Tehran's Grand Bazaar saw brisk business at jewelry stores as people rushed to buy gold.
– Economic 'malaise' –
The United States already enforces unilateral sanctions on Iran and has put huge pressure on third countries to stop buying Iranian oil, although China has defied it.
Brussels-based think tank the International Crisis Group said Iran seemed dismissive of the renewed UN sanctions as it had already worked out how to cope with the US ones.
But it noted that the snapback was not easy to reverse as it would require consensus at the Security Council.
"It is also likely to compound the malaise around an economy already struggling with high inflation, currency woes and deepening infrastructure problems," it said.
In an address to the UN General Assembly on Friday, Israeli Prime Minister Benjamin Netanyahu urged no delay in reinstating the sanctions.
He also hinted that Israel was ready to take further military action after the 12 days of bombing that Iranian authorities say killed more than 1,000 people in June.
