Iranian foreign minister says U.S. will “bitterly regret” the precedent Following the attack on an Iranian naval vessel in international waters, Tehran warned the United States, condemning the strike as a serious escalation at sea. Iran claimed that the warship had recently been a guest of the Indian Navy. The Iranian frigate IRIS Dena was reportedly struck by a torpedo believed to have been fired from a U.S. submarine in the Indian Ocean near Sri Lanka, causing the vessel to sink. Some reports indicated that more than 80 bodies had been recovered following the incident. According to Iranian authorities, the… Read more: Iran Says US Struck ‘Guest of India’s Navy’ Frigate IRIS Dena, Issues Stark Warning