A US official told Al Jazeera we are closely monitoring Iran's attacks on maritime shipping in the Strait of Hormuz, which are unjustified acts of aggression.

Verbal escalation around the Strait of Hormuz follows a familiar script: the strait carries a large share of seaborne crude and LNG, and rhetoric from US officials describing attacks on shipping there has historically lifted the geopolitical risk premium embedded in the front of the Brent and WTI curves before any physical disruption is confirmed. The distinction that has mattered in comparable episodes is between harassment of vessels and an actual interruption to flows: the former has tended to fade from prices within sessions unless tanker traffic, freight rates, or war risk insurance premia move, while the latter transmits directly through prompt spreads and backwardation. Characterising the attacks as unjustified aggression signals a harder US posture and raises the question of escort or interdiction measures, which in past episodes of this kind has been the point at which shipping costs and prompt crude repriced rather than the headline itself. Worth watching are tanker transits through the strait, Gulf to Asia freight rates, insurance quotes for the route, and any Iranian official response. As an unnamed-official comment to a regional broadcaster, it is a signalling step rather than a policy commitment.