On today’s episode, Ryan talks to Lt. General H.R. McMaster about why leaders must study history and philosophy, his book Dereliction of Duty about the controversial Vietnam war, Seneca’s complicated service for the emperor Nero, and more.H.R. McMaster is a retired United States Army Lieutenant General who served as the 26th United States National Security Advisor. He is known for his roles in the Gulf War, Operation Enduring Freedom, and Operation Iraqi Freedom. His book, Battlegrounds: The Fight to Defend the Free World, was released in September 2020 and is an overview of the most critical foreign policy and national security challenges that face the United States in the modern age. This episode is brought to you by Beekeeper’s Naturals, the company that’s reinventing your medicine with clean, effective products that actually work. Beekeepers Naturals has great products like Propolis Spray and B.LXR. As a listener of the Daily Stoic Podcast you can receive 15% off your first order. Just go to beekeepersnaturals.com/STOIC or use code STOIC at checkout to claim this deal.This episode is brought to you by Blinkist, the app that gets you fifteen-minute summaries of the best nonfiction books out there. Blinkist lets you get the topline information and the most important points from the most important nonfiction books out there, whether it’s Ryan’s own The Daily Stoic, Yuval Harari’s Sapiens, and more. Go to blinkist.com/stoic, try it free for 7 days, and save 25% off your new subscription, too.Policygenius helps you compare top insurers in one place, and it lets you save 50% or more on life insurance. Just go to policygenius.com to get started. Policygenius: when it comes to insurance, it’s nice to get it right.Today’s episode is brought to you by Munk Pack, Keto Granola Bars that contain just a single gram of sugar and 2 to 3 net carbs—and they’re only 140 calories. Get 20% off your first purchase of ANY Munk Pack product by visiting munkpack.com and entering our code STOIC at checkout.***If you enjoyed this week’s podcast, we’d love for you to leave a review on Apple Podcasts. It helps with our visibility, and the more people listen to the podcast, the more we can invest into it and make it even better.Sign up for the Daily Stoic email: http://DailyStoic.com/signupFollow @DailyStoic:Twitter: https://twitter.com/dailystoicInstagram: https://www.instagram.com/dailystoic/Facebook: http://facebook.com/dailystoicYouTube: https://www.youtube.com/dailystoicFollow H.R. McMaster:Twitter: https://twitter.com/LTGHRMcMaster Instagram: https://www.instagram.com/ltghrmcmaster See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.