A US response now risks extending the seven-month conflict after President Donald Trump vowed to “hit them hard” following an Iranian missile strike on a base hosting US troops in Jordan.

Trump amplified his long-standing message that Iran’s governing system is collapsing, writing on social media that "Iran is officially a Failed Nation" and declaring, "IT IS DEAD!" He listed economic and military failures, saying Iran has no navy or air force, faces 300% inflation, and is not paying security forces. On Fox News, he warned, "We’re going to hit them hard," adding, "There will be a response."

The flare-up followed a US strike on Larak Island that targeted launchers the US said were preparing rockets loaded with naval mines for attacks on the Strait of Hormuz. Iran retaliated by launching missiles at a base in Jordan that hosts US personnel, the first exchange of fire between the two countries since July.

Trump also urged that Iran’s leaders be prosecuted, accusing Tehran of killing protesters in a crackdown that he said had resulted in more than 100,000 deaths. That figure departs from his earlier claim of 60,000 and far exceeds the Iranian authorities’ count of 3,117, which they say includes security personnel and blames deaths on Israel-backed "rioters." The president’s statement additionally mixed references to war crimes and crimes against humanity.

The administration has said it was shifting toward economic pressure rather than routine military operations, but the latest strikes underline how quickly tensions can escalate without a settlement to end the war. The conflict remains driven on the Iranian side by the Islamic Revolutionary Guard Corps, which continues to lead Tehran’s military effort.

Separately, the Trump administration has imposed sanctions on International Criminal Court officials over an arrest warrant for Israeli Prime Minister Benjamin Netanyahu, while Iran has accused the US of committing war crimes and targeting civilians. Among the dead in the conflict, a strike on Minab on the first day killed 168 people, mostly children, a casualty figure cited by Iranian accounts.

The immediate prospect is more tit-for-tat strikes and rising risk of wider confrontation, as Washington weighs a response that could prolong hostilities that so far show no sign of ending.