A double bombing in Iran killed 84 people as they marked the death of an Iranian military leader assassinated in an alleged U.S. airstrike four years ago. This comes as the leader of Iran's proxy militia Hezbollah vows revenge for the killing of a Hamas leader in Lebanon. NBC’s Keir Simmons reports for TODAY. » Subscribe to TODAY: https://www.youtube.com/@TODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: https://www.today.com/ Find TODAY on Facebook: https://www.facebook.com/today Follow TODAY on Twitter: https://twitter.com/TODAYshow Follow TODAY on Instagram: https://www.instagram.com/todayshow/ » Stream TODAY All Day: https://www.today.com/allday About: TODAY All Day is a 24/7 streaming channel bringing you the top stories in news and pop culture, celebrity interviews, cooking, and more. All in one place. #iran #worldnews #hamas