Two US service members have been reported killed in action in Jordan, according to the US military, with another person still missing. The announcement marks a sharp escalation in the latest confrontation involving US forces in the region.

The incident was described as an Iranian attack in the available report, adding to already high tensions between Washington and Tehran. The development comes as both sides have increased attacks after an interim ceasefire agreement, reached about a month ago, broke down.

That collapse has raised fresh concern about a broader return to open conflict. With military activity intensifying, the latest deaths in Jordan are likely to deepen fears that the fighting could spread further across the region.

Iran's supreme leader also signaled a hardening stance, saying the US would pay for what he called efforts to incite war. Together, the battlefield losses in Jordan and the increasingly hostile rhetoric point to a dangerous new phase in the confrontation.