Trump's new 25% tariff for those doing business with the Islamic Republic comes as the United States weighs further action to intervene in the protests.

A source inside Iran who was able to call out told CBS News on Tuesday that activist groups working to compile a full death toll from the protests, based on reports from medical officials across the country, believed the toll was at least 12,000, and possibly as high as 20,000.

President Doanld Trump says he’s canceled talks with Iranian officials amid a protest crackdown, telling Iranian citizens “help is on its way.”

Video from the streets is one of the few ways of getting information out about the scale of the protests and the actions of Iranian authorities.

Demonstrations that began as outrage over the economy have spread across the country, amid an escalating crackdown by the authorities and the threat of U.S. military action.

Iranians could call abroad on mobile phones on Tuesday for the first time since communications were halted during a crackdown on nationwide protests, in which activists said at least 646 people have been killed.

Iranian-American activist Masih Alinejad accuses the Western left of "ideological silence" amid Iran’s protest crackdown and communications blackout.