US President Donald Trump warned that Iran would be hit “much, much harder” if it attempted to block global oil supplies, escalating tensions as the war in the Middle East continues to disrupt energy markets.

Speaking on Monday, Trump said the conflict with Iran could be short-lived but left open the possibility of intensifying military action if Tehran interfered with oil shipments through the Strait of Hormuz. “If Iran tries to block oil supplies, they will be hit much, much harder,” Trump declared, underscoring Washington’s determination to keep global energy flows open.

The remarks came as oil prices surged past $100 per barrel, briefly reaching $118 in weekend trading, the highest levels since 2022. The Strait of Hormuz, a critical waterway through which about one-fifth of the world’s oil passes, has been effectively closed amid the fighting, raising fears of prolonged supply disruptions.

Trump insisted that his administration had “a plan” to stabilize markets, pointing to discussions among major economies about releasing emergency oil stockpiles. However, analysts warn that any prolonged closure of the Strait could trigger severe economic consequences worldwide.

The threat against Iran comes just days after the Islamic Republic appointed Mojtaba Khamenei, son of the late Ayatollah Ali Khamenei, as its new supreme leader. His rise has been seen as cementing hardline control in Tehran, further complicating prospects for de-escalation.

Trump’s comments highlight the growing risk of the war spilling over into global energy markets. With oil prices already volatile and shipping routes under threat, the U.S. president’s warning signals that Washington is prepared to escalate military action to protect international trade.