The document compares historical causes of major conflicts to potential future causes. It discusses four historical causes: 1) Economic volatility, 2) Ethnic disintegration, 3) Empires in decline, and 4) Eastern resurgence. It then examines whether similar factors are at play today, specifically looking at potential volatility in the Middle East, ethnic meltdown in Iraq, the decline of the US empire, and the rise of Iran and China. While financial markets appear calm, the document warns of "low probability, high-impact events" that are hard to predict but could significantly impact the global economy and geopolitical order.