The crisis in the Strait of Hormuz has exposed Korea’s strategic vulnerability to imported fossil fuels. Korea imports 84 percent of its energy, and virtually all of it arrives by sea through contested maritime chokepoints. Its vulnerability to external disruption, a longstanding risk, has become more apparent and less acceptable. Soon, Korea will announce K-GX, its strategy for turning climate commitments into industrial growth, which is an opportunity to reduce this vulnerability. When I oversaw military bases and associated energy policy at the U.S. Department of Defense, I had to plan for electricity being cut off. Our bases had missions that needed certainty, and we had to assume that the grid would fail. Similarly, Korea should assume its supply lines can and will be disrupted. My challenge was a microcosm of the one Korea now faces — how do you reduce your exposure to external energy shocks? At the Department of Defense, we had a wide range of options for energy security, from diesel generators to solar battery systems. However, resilience was not our only constraint. We had