Protesters were "ruining their own streets" to please President Donald Trump, who has threatened intervention, Supreme Leader Ayatollah Ali Khamenei said Friday.

Ayatollah Ali Khamenei, Iran’s supreme leader, who has spent more than three decades consolidating power by crushing internal threats, now faces his most significant challenge yet as widespread protests grip the nation.

Iran's Supreme Leader Ayatollah Ali Khamenei strikes a defiant tone against the U.S. after a night of massive anti-government protests.

Mass protests in the streets of Iran are presenting the most significant challenge to the country’s regime in years. President Trump today renewed his threat to take action in Iran if the government there goes after protestors.

After days of fierce protest, Ayatollah Ali Khamenei accused protesters of trying to “please” President Trump. Iranian authorities signaled further crackdowns on the demonstrations.

Many Iranian opposition activists are hoping the current unrest could be the beginning of the end of the country's hardline Islamic regime.

Iran's judiciary chief has vowed decisive punishment for protesters, signaling a coming crackdown against demonstrations.

Iran condemns “the ongoing, unlawful, and irresponsible conduct of the United States of America, in coordination with the Israeli regime," Iran’s UN Ambassador Amir Saeid Iravani wrote. The United States is to blame for “the transformation of peaceful protests into violent,