This co-hosted history podcast episode delves into the lead-up to World War II, specifically focusing on the events surrounding the Nazi-Soviet Pact. The hosts discuss Hitler's motivations, his 50th birthday celebrations, and his increasingly erratic behavior as the invasion of Poland loomed. They detail the negotiations between Ribbentrop and Molotov, highlighting Hitler's personal intervention to expedite the pact's signing and Stalin's surprising willingness to cooperate. A key takeaway is Hitler's misjudgment of Britain and France's resolve, ultimately leading to the declaration of war. The episode concludes by describing the final days before the invasion, including staged provocations and last-minute attempts at diplomacy that ultimately failed.