Oil prices up as Iran says it will expand control over Strait of Hormuz

# Why This Matters Iran's assertion of expanded control over the Strait of Hormuz represents a direct challenge to one of the world's most economically critical waterways, through which roughly 21 percent of global petroleum passes daily. Any meaningful disruption—whether through enforced exclusion zones, shipping delays, or escalated military confrontation—would immediately ripple through energy markets, raising prices for consumers at gas pumps worldwide while increasing costs for manufacturers dependent on affordable fuel. Beyond energy markets, the move threatens the freedom of navigation that underpins global trade; if other maritime chokepoints become subject to similar unilateral control claims, the cost structure of international commerce fundamentally shifts. For U.S. allies in the Gulf region and Europe, this escalation raises the stakes on regional tensions and could force difficult decisions about military commitments or diplomatic concessions to ensure energy security.