'US will bitterly regret' sinking ship, warns Iran's foreign minister

Authorities said after at least 87 were killed in the attack

A US submarine strike hit the Iranian vessel off Sri Lanka's southern coast, thousands of miles from the Gulf, on Wednesday.

Iran's foreign minister warned of repercussions after the US struck the Iranian frigate Dena in international waters without warning, saying the ship was a guest of India's navy.

"The US will bitterly regret the precedent it has set," Abbas Araqchi wrote on Thursday in a post on X.