Former Canadian Ambassador to the United States David MacNaughton joins H.R. McMaster to discuss Canada and US cooperation on Arctic and North American security, prospects for deepening economic cooperation after the 2026 review of the USMCA trade agreement, and the opportunities to turn recent tensions into opportunities for both nations. Learn more about Today's Battlegrounds by visiting: https://www.hoover.org/publications/todays-battlegrounds?utm_source=youtube&utm_medium=description&utm_campaign=bg_description&utm_content=03252026 __________ The opinions expressed on this channel are those of the authors and do not necessarily reflect the opinions of the Hoover Institution or Stanford University. © 2026 by the Board of Trustees of Leland Stanford Junior University. 🔔 Subscribe for more discussions: @HooverInstitution 👍 Like and share this video! 🌐 Follow us on social media: • Facebook: https://www.facebook.com/HooverInstStanford • LinkedIn: https://www.linkedin.com/company/hoover-institution-at-stanford-university • Instagram: https://instagram.com/hooverinstitution • TikTok: https://www.tiktok.com/@hooverinstitution • X: https://www.twitter.com/HooverInst