US has reportedly made some progress clearing sea mines in international waters; however, an Iranian estimate suggests 80-150 mines it deployed remain uncleared

Mine clearance in contested waters is a slow, attritional business; in past episodes of this kind the clearance phase has run well beyond the point at which the threat was declared contained, and the gap between official progress claims and independent estimates of remaining ordnance has been the operative variable. The transmission channel into crude and product markets runs through war-risk insurance premia, freight rates and charterer willingness to transit, not through the mines themselves: it is the underwriters' assessment of residual risk that sets the cost of the voyage, and that assessment has historically lagged official clearance claims by a wide margin. The distinction worth drawing is between lanes formally declared clear and lanes actually carrying normal traffic, since tonnage only returns once insurers and shipowners are satisfied, and partial clearance with a large estimated residual count tends to keep premia elevated even as headlines improve. An adversary's estimate of its own deployed mines carries its own incentive problem and should be read as a negotiating signal as much as an ordnance count. The follow-ons are shipping traffic data through the affected lanes, war-risk rate quotes, and any resumption of attacks or fresh mining reports that would reset the clearance clock.