Iran security forces clash with protesters in Tehran, Shiraz and Kermanshah as opposition groups report gunfire and demonstrators chant 'Death to Khamenei' during fourth day of 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.

TEHRAN, Iran -- Iranian President Masoud Pezeshkian on Tuesday said his country’s answer to an attack would be harsh, which appeared to be in response to a warning by U.S. President Donald Trump over reconstruction of Iran’s nuclear program.

Iran launches three satellites with Russian assistance, showcasing deepening cooperation as they resist Western sanctions and international pressure.

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.

Despite being so far limited, this week’s protests mark the latest chapter in growing discontent in Iran, while a population quietly reclaims public spaces and personal freedoms through uncoordinated acts of defiance.

On Tuesday's "The Record with Greta Van Susteren," Prime Minister of Israel Benjamin Netanyahu praised President Trump's support against Iran and its proxies. Netanyahu claimed Iran is "in cahoots" with Nicolas Maduro in Venezuela and suggested they are sending weapons to the South American nation.

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