Iran has pushed back against a naval blockade imposed by the United States, warning that the move will fail and further destabilise global energy markets, as crude oil prices continue to climb sharply.
Tensions between Iran and United States escalated after President Donald Trump indicated the blockade could remain in place for months. The standoff has already sent shockwaves through global markets, with Brent crude rising above $126 per barrel — a four-year high.
Iranian President Masoud Pezeshkian condemned the blockade, describing it as a violation of international law and warning of wider consequences for regional stability.
“Any attempt to impose a maritime blockade or restrictions is contrary to international law and is doomed to fail,” Pezeshkian said, adding that the measure threatens long-term peace in the Persian Gulf.
The blockade, which began on April 13, targets Iran’s oil exports, while Tehran continues to assert control over the strategic Strait of Hormuz — a critical global shipping route through which a significant share of the world’s oil supply passes.
US military officials say enforcement efforts are already underway. United States Central Command reported intercepting multiple vessels attempting to breach the blockade, noting that dozens of tankers carrying millions of barrels of oil remain unable to reach global markets.
The ongoing confrontation is fuelling uncertainty in energy markets, with analysts warning of further price volatility if tensions persist. The blockade is also part of broader US efforts to pressure Iran over its nuclear programme, with reports suggesting Washington is considering additional military options.
Despite the pressure, Iran has signalled it will not back down, maintaining its grip on key shipping lanes and warning that continued escalation could have far-reaching consequences beyond the region.
The standoff has raised concerns among global stakeholders, as prolonged disruption in the Strait of Hormuz could significantly impact energy supply chains and deepen economic uncertainty worldwide.

