In a move that speaks to the deepening interdependence of nations navigating an uncertain energy future, South Korea has committed capital to a Texas power facility and is weighing nuclear investments as part of a formal partnership with the United States. Seoul, long dependent on imported fossil fuels and pressed by domestic calls for cleaner energy, is reaching across the Pacific not merely for financial return but for strategic footing. The agreement reflects a broader truth of this era: energy security and geopolitical alliance are increasingly inseparable.