Iran's government imposes five-day internet blackout as nationwide protests intensify, with at least 646 people killed and over 10,000 arrested during the crackdown.

White House envoy Steve Witkoff met secretly over the weekend with the exiled former crown prince of Iran, Reza Pahlavi, to discuss the protests raging in Iran, according to a senior U.S. official. Why it matters: This was the first high-level meeting between the Iranian opposition and the Trump administration since the protests began 15 days ago.

Attacking Iran with airstrikes is "on the table" as President Donald Trump weighs military options in the country, his press secretary said.