🇮🇷❌🇺🇸 — NEW: Iran launched another attack against U.S. Navy vessels on Monday that the U.S. military has not publicly acknowledged, following ballistic missile attacks against an American aircraft carrier and guided-missile destroyer over the weekend, though no U.S. ships were hit, WSJ reports.

U.S. officials say the attacks have raised concerns that Iran is employing increasingly sophisticated weapons and could be receiving assistance from China or Russia in locating American warships.