Iran has warned that it will target shipping in the Red Sea if the United States launches a ground invasion of Iranian territory, potentially extending the war’s economic impact to another of the world’s most critical maritime trade routes. The threat, delivered through official military channels, is designed to raise the cost of any American ground operation beyond what Washington would be prepared to absorb.
The warning came in the context of reports that the Trump administration is considering an assault on Kharg Island, Iran’s primary oil export facility, as a means of pressuring Tehran to reopen the Strait of Hormuz. An unnamed Iranian military official told the Tasnim news agency that if the US attempted “a ground operation on Iranian islands or anywhere else on our territory,” Iran would “open other fronts as a surprise,” with the Red Sea specifically cited as a potential additional theatre of operations.
The Red Sea is already a contested waterway following Houthi attacks on shipping earlier in the conflict cycle. Iranian involvement in Red Sea disruptions would significantly escalate the pressure on global supply chains and potentially draw additional regional actors into the conflict. The threat reflects Iran’s broader strategy of making the war economically unbearable by targeting the multiple waterways and energy corridors that underpin global trade.
Kharg Island sits in the northern Persian Gulf and is connected to Iran’s mainland by a causeway. Its oil export terminals handle the vast majority of Iran’s crude sales, making it the economic heartbeat of the Islamic Republic’s energy sector. Capturing or neutralising Kharg would dramatically reduce Iran’s ability to fund the war effort. The US apparently calculates that the economic leverage this would create could force a rapid ceasefire; Iran calculates that the cost of taking it would be too high for Washington to absorb.
The threat matrix around any ground operation has now expanded significantly. Between Iran’s threats to carpet-bomb its own territory, strike regional allies’ infrastructure, and open the Red Sea as a new front, the potential cost of a Kharg Island invasion has been raised to a level that gives even hawkish American strategists pause. Whether this deterrence is credible or a bluff designed to protect a negotiating position is a question that American intelligence analysts are urgently trying to answer.