Iran's IRGC spokesman Ali Mohammad Naini was killed in a joint US-Israeli strike on Day 21 of Operation Epic Fury. Iran responded with a formal threat to attack tourist sites around the world. The US is now actively considering seizing a strategically critical island to force open the Strait of Hormuz, which controls 20% of the world's oil supply.

Today's briefing covers what happened, what it means, and what people are actually saying — in 20 minutes.

Listen now. You'll be on the frontlines of monitoring the situation.