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 appointed a new central bank governor on Wednesday as an economic crisis sparked mass protests following a record currency fall against the U.S. dollar.

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

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

Protesters in Iran have tried to break into a local government building in the southern province of Fars, on a fourth day of demonstrations sparked by a currency collapse. Officials said three police officers were injured and four people arrested in the city of Fasa.

Iran protests escalated as demonstrators clashed with security forces in Tehran and Mashhad, with tear gas deployed amid nationwide strikes, reports say.

Unrest is triggered by a drop in Iran’s currency, as frustration with a persistent economic crisis rises.

Iran's largest protests in three years erupted Monday after the country’s currency plummeted to a record low against the U.S. dollar, and the head of the Central Bank resigned. State TV reported the resignation of Mohammad Reza Farzin,