iran announced the strait of hormuz was closed on 2026-06-20, citing an israeli ceasefire breach. the us military publicly disputed the closure claim. actual ais transit data showed 25 ships on 2026-06-19, dropping to single digits on 2026-06-20. the disagreement is structurally unusual because the disputed closure coincides with active us-iran peace negotiations in switzerland — both actors have simultaneous incentives to obscure ground truth.