Strategic reserves make convoy disruption survivable

No state is wholly self-sufficient, so convoy planning must account for geography, imports, and the supplies already held ashore. The United States maintains strategic petroleum reserves, but modern stocks remain limited beside the Roman Empire's grain reserves and wider arrangements for maintaining food supply. Household reserves can also soften short disruptions even though public discussion often treats stockpiling as an extreme activity. The Suez Canal blockage and the post-pandemic port disruption show how quickly lean commercial systems become vulnerable. Convoys keep goods moving only when warehouses, escorts, stockpiles, and administrative preparation already exist.