Tehran also increasingly cut back its cooperation with the International Atomic Energy Agency, the U.N.'s nuclear watchdog, as tensions increased over its nuclear program in recent years. The IAEA’s director-general has warned Iran could build as many as 10 nuclear bombs, should it decide to weaponize its program.

The spreading unrest, sparked by economic protests by Tehran shopkeepers, adds to a list of pressures on the regime.

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Iranian media reported the arrest of an alleged Mossad affiliate amid expanding protests, internet disruptions, campus raids, and growing chants against Supreme Leader Ali Khamenei. Iranian authorities arrested an "affiliate of the Zionist regime's espionage service (Mossad)" who was "identified and detained while acting covertly among rioters in Tehran,

Iran will offer no leniency to "rioters", though the public has a right to demonstrate, the head of the country's judiciary said on Monday, following more than a week of sometimes-deadly protests. He went on to add that Iran "listens to the protesters and their criticism,

At least 35 people have been killed in protests across Iran, activists say, as demonstrations spread nationwide amid arrests, injuries to security forces and growing international concern.

Galloping inflation and a currency crisis have provoked demonstrations across the country. Protests fueled by deepening economic hardship have swept Iran for more than a week, as soaring inflation has driven frustrated traders and university students into the streets of major cities, including the capital, Tehran.

Anti-regime protests entered a fifth day as demonstrations spread across Tehran and other cities, with reports of deaths emerging amid escalating nationwide unrest.

Authorities in Iran say a volunteer member of the Revolutionary Guard has been killed during protests over the country's struggling economy.