The U.S. sank Iran's frigate in international waters, killing 87, sparking global condemnation and escalating tensions.

Iran condemned a U.S. submarine attack that sank the Iranian frigate IRIS Dena in international waters near Sri Lanka, calling it an unprovoked "atrocity" and warning the U.S. will "bitterly regret" the precedent. The frigate, carrying nearly 130 sailors and operating as a guest of India’s navy, was struck without warning, resulting in 87 deaths, 32 rescued, and 61 missing. The U.S. confirmed the torpedo strike, calling it the first such attack on a warship since World War II. Iran retaliated by claiming it set an American tanker on fire in the Persian Gulf and threatened further actions, including potential strikes on strategic sites. Tensions continue to rise amid regional instability.