In the waters of the Red Sea and Gulf of Aden, a militant group backed by Iran has quietly redrawn the map of global energy risk — not through overwhelming force, but through the patient exploitation of fractured alliances and strategic hesitation. The Houthis have turned America's most consequential regional relationships into liabilities, striking at the arteries of oil transport with enough precision to unsettle markets without triggering the decisive response that might end their campaign. This is the oldest story in geopolitics: power constrained by its own complexity, and a smaller actor