Threat Status: How Iran's regime sows chaos on the world stage

Tehran is backing Islamist militants around the Mideast, from Hamas and Hezbollah to the Houthis of Yemen. It's also making increasing inroads in Africa and strategically aligning with the authoritarian powers of Russia, China and North Korea. National Security Editor Guy Taylor sits down with Norman Roule, the former longtime CIA official and U.S. National Intelligence Manager for Iran, to discuss the regime's threat to international freedom, the future of its nuclear program amid a brewing Iranian supreme leader succession battle, and the Biden administration's response.