Khamenei warns U.S. strike would ignite wider regional war, cites naval buildup

Ayatollah Ali Khamenei warned that a U.S. attack on Iran “this time” would spill across the entire region, as Tehran dismissed recent American naval deployments and prepared live-fire exercises in the Strait of Hormuz. The remarks, delivered at a meeting in Tehran ahead of the 47th anniversary of the 1979 Islamic Revolution, ratchet up a tense mix of military posturing, domestic unrest and tentative diplomatic signals.

“If the US initiates a war this time, it would spill over across the entire region,” Khamenei said, Aa Com Tr reported. He added that Iran was not seeking to start a conflict and “does not seek to attack any country,” but warned it would “deliver a firm blow to anyone who attacks or harasses it,” the wire service said. The semi-official Tasnim news agency, cited by the BBC, quoted Khamenei saying “the Americans should know that if they start a war, this time it will be a regional war.”

Khamenei rejected U.S. naval deployments as new pressure. Reuters summarized his dismissal of carrier and warship movements as “nothing new.” The BBC reported that the U.S. had dispatched the aircraft carrier USS Abraham Lincoln to the region and that U.S. Central Command said it was operating in the Arabian Sea. Iran, meanwhile, is due to begin a two-day live-fire naval exercise in the Strait of Hormuz, the BBC said.

The Strait of Hormuz is a critical chokepoint for global energy markets. Around a fifth of the world’s traded oil passes through the waterway, which narrows to roughly 33 km (21 miles) between Iran and Oman at its tightest point, the BBC reported. That geography elevates the economic stakes of any escalation; disruptions or even heightened threats typically increase shipping insurance premiums, raise risk premia in oil markets and drive short-term price volatility.

Khamenei also framed recent domestic unrest as an externally backed threat. He described anti-government protests as “similar to a coup” that was “suppressed,” Aa Com Tr and Tasnim reported, and accused the United States and Israel of supporting rioters. The BBC, citing Human Rights Activists News Agency, reported that more than 6,300 people have been killed since unrest began in late December and said another 17,000 reported deaths were under investigation; the Norway-based Iran Human Rights warned the final toll could exceed 25,000. Those figures are NGO tallies and have not been independently verified.

Against the backdrop of hardline warnings, officials on both sides signaled limited openings for talks. Ali Larijani said a “structured framework” for negotiations “is taking shape and moving forward,” Aa Com Tr reported. President Donald Trump told reporters that Iran was “seriously talking” with Washington and has urged Tehran to enter negotiations, while posting on social media that a massive “armada” was heading toward Iran, Aa Com Tr said. The juxtaposition of military pressure and diplomatic overtures raises both the possibility of de-escalation and the risk of miscalculation.

For markets and policymakers, the immediate challenge will be managing the risk that tactical incidents, during Iranian naval drills or U.S. ship movements, could trigger broader conflict. Energy traders and insurers will watch the Strait of Hormuz closely, while governments must weigh deterrence against the new economic costs of escalation. In longer-term terms, the episode underscores a persistent pattern: strategic confrontation around vital sea lanes that repeatedly tests regional stability and global energy security.