Tensions between the United States and Iran have escalated sharply, with Washington warning of possible military action if Tehran continues to threaten access to the strategic Strait of Hormuz.

Donald Trump has called on Iran to reopen the vital shipping lane, signaling a shift from earlier remarks that downplayed U.S. responsibility for the route. The strait, which carries nearly a fifth of the world’s oil supply, remains one of the most critical chokepoints in global energy trade.

Officials say any disruption could have immediate consequences for global oil markets, pushing prices higher and increasing economic uncertainty.

The renewed warnings come amid reports that Iran is tightening its grip over the passage, raising concerns about freedom of navigation and energy security in the region.

Analysts warn that even limited disruptions in the Strait of Hormuz could trigger wider instability across global markets.