Operation Barbarossa: To The Brink (Part 3)

Holland and Murray on the German high command's catastrophic underestimation of Soviet capacity — low mechanisation rates, logistical planning failures, and Stalin's diplomatic manoeuvring with Japan to secure his eastern flank. The discussion of how Germany's own industrial weaknesses were papered over in the planning process is the strongest section. Essential context for Part 4, and strong on its own terms.