the strait of hormuz reopened june 18 as part of a us-iran 60-day ceasefire memorandum; major vessels moved through for the first time in 110 days after sitting stranded since february. this is structurally significant because the strait carries roughly 20% of global oil shipments — the length of the closure and the abruptness of its resolution both represent unusual disruption to a critical chokepoint. the ceasefire is interim; the physical layer has restarted but the political layer remains unresolved.