Explore a comprehensive briefing on national security challenges and collaborative efforts to address them in this recorded live session from the 2018 Aspen Security Forum. Gain insights from Kirstjen Nielsen, Secretary of Homeland Security, as she discusses how the Department of Homeland Security and its domestic and international partners are working together to secure the nation. Listen to the in-depth conversation moderated by Peter Alexander, National Correspondent for NBC News, covering critical aspects of homeland security and the strategies employed to safeguard the United States.