Through the narrow passage between Iran and Oman — where a fifth of the world's oil flows each day — commercial vessels are moving again, following American efforts to restore one of the globe's most consequential maritime corridors. The achievement is real, but it is bounded: the Strait of Hormuz has been reopened, not reconciled, and the deeper antagonism between Washington and Tehran that placed it in jeopardy remains as unresolved as ever. History reminds us that tactical victories in long rivalries are not conclusions — they are pauses, and the terms of the next confrontation are already