Iran security forces clashed with protesters in Tehran, Shiraz and Kermanshah as opposition groups report gunfire and demonstrators chant "Death to Khamenei" during unrest.

As the U.S. and Israel back Iranians' right to protest against their leaders, authorities in Tehran detain students and declare a sudden holiday.

Iran’s exiled opposition leader, Reza Pahlavi, his issued a New Year's message to his compatriots that “the current regime has reached the end of the road" in comments that come as protests in the country have escalated and turned fatal.

U.S. officials voice support for Iranian demonstrators as protests intensify following currency crisis, with reports of tear gas and security crackdowns.

The protests erupted Sunday and gathered pace Monday after the Islamic Republic’s currency, the rial, hit a record low against the dollar. Many in Iran are already struggling with the cost of living, and rising prices have fueled concerns about potential hyperinflation.

The BBC World Service has engaged with the UN over the protection of its Iranian journalists and their families since 2017

Protests over Iran’s falling currency grew as they spread across Iran, increasing the pressure on a government already struggling with an economic crisis and shattered defenses after a war with Israel.

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Iran is reportedly developing chemical and biological warheads for its long‑range ballistic missiles, accelerating its deterrence program amid rising tensions with Israel and the U.S., according to media reports citing military officials. Newsweek has reached out to the U.S. State Department for comment.

After meeting with Israel's Netanyahu, Trump said he'd heard Iran is trying to rebuild its nuclear program, "and if they are, we're going to have to knock them down."