Senator Lindsey Graham, a South Carolina Republican and frequent critic of Iran's Ayatollah Ali Khamenei's regime, posted a message on X in support of the widespread protests happening in the Mideast nation and assuring the protesters that President Donald Trump has "noticed" their resistance.

As Iran continues its violent crackdown on protesters, President Trump is again threatening U.S. intervention if demonstrators are killed. NBC's Richard Engel has the latest.

Dozens are reported to have been killed since anti-government protests began spreading across the country almost two weeks ago.

In a speech on Thursday, Iran’s Supreme Leader Ayatollah Ali Khamenei accused protesters of acting on behalf of US President Donald Trump and vowed his government would not back down. The regime has accused foreign forces and “terrorists” of stoking the protests.

In a serious challenge to Iran’s authoritarian government, angry protests have spread from the markets and universities of major cities to the impoverished towns in the hinterland.

Iran protests turn more violent with 65 reportedly killed by Friday and over 2,300 arrested as authorities imposed an internet blackout amid nationwide anti-regime unrest.

Protests in Iran are intensifying due to the country's struggling economy, putting pressure on its theocracy as it has shut down the internet and telephone networks.

Iran entered a 12th consecutive night of widespread anti-government protests as authorities imposed a nationwide internet shutdown, drawing international attention and sharp criticism from exiled opposition figure Reza Pahlavi.