Which countries will send warships through the Strait of Hormuz by June 30?

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Market context

The Strait of Hormuz, a 54-nautical-mile waterway between Iran and Oman, remains one of the world's most strategically contested chokepoints. Roughly one-third of global seaborne oil passes through it annually, making any disruption to shipping lanes a matter of international concern. Warship transits by non-regional powers—particularly Western navies—have become a flashpoint for geopolitical tension, with Iran's Islamic Revolutionary Guard Corps frequently challenging foreign military vessels and threatening to close the strait entirely during periods of heightened US-Iran friction.

Historical precedent suggests regular warship transits occur during normal geopolitical conditions. The US Navy conducts Freedom of Navigation operations multiple times yearly, whilst British, French, and other allied navies periodically deploy through the strait as part of routine Gulf operations. Between 2019 and 2024, dozens of confirmed transits by Western warships occurred despite escalating rhetoric from Tehran. The 4% probability implies traders expect either a significant diplomatic thaw or sustained Iranian blockade attempts that successfully deter foreign naval passage—outcomes that contradict the baseline pattern of the past five years.

Key variables to monitor include any formal Iranian announcements regarding strait closure, shifts in US-Iran nuclear negotiations, and scheduled coalition naval operations in the Persian Gulf. Recent statements from Iran's Foreign Ministry regarding maritime sovereignty and any new US military deployments to the region would signal changing transit likelihood. Confirmation of specific warship movements typically emerges through official military statements, maritime tracking data, or credible reporting from Reuters, AP, or regional defence correspondents within days of occurrence.

Methodology

This page reviews Which countries will send warships through the Strait of Hormuz by June 30? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Champions League Prediction — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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