Tensions between Iran and the U.S. have escalated sharply after President Donald Trump ordered airstrikes on Iranian nuclear sites on June 21. The strikes involved 30 Tomahawk missiles and 12 warheads targeting Natanz, Esfahan, and Fordow. The decision came within 48 hours amid rumors Iran was developing nuclear weapons, with the U.S. claiming it intervened “to save Israel.”

Iran, already in conflict with Israel, called the attacks a “declaration of war,” prompting fears of global fallout. Now, Iranian media reports suggest Tehran may respond by closing the 21-mile Strait of Hormuz—a vital link between the Persian Gulf and the Gulf of Oman.

Al Arabiya warns that the closure, currently under review by Iran’s Supreme National Security Council, could severely impact global oil and gas supply. “This strait is used by 20% of the world’s natural gas and oil supplies,” the report noted.

With final approval pending from Iran’s parliament, “people are now preparing for a decline in the economy and a jump in oil costs.” A temporary closure would hurt several countries, but a permanent shutdown could destabilize global markets.

It remains unclear if Iran’s threat is a serious move or a negotiation tactic.