The U.S. Navy said it seized a large cache of assault rifles and ammunition being smuggled by a fishing ship from Iran likely bound for war-ravaged Yemen. U.S. Navy patrol ships discovered the weapons aboard what the Navy described as a stateless fishing vessel in an operation that began on Monday in the northern reaches of the Arabian Sea off Oman and Pakistan. Sailors boarded the vessel and found 1,400 Kalashnikov-style rifles and 226,600 rounds of ammunition, as well five Yemeni crew members. It’s just the latest interdiction amid the grinding war in Yemen that pits Iran-backed Houthi rebels against a Saudi-led military coalition. Western nations and U.N. experts repeatedly have accused Iran of smuggling illicit weapons and technology into Yemen over the years, fueling the civil war and enabling the Houthis to fire missiles and drones into neighboring Saudi Arabia. Iran denies arming the Houthis despite evidence to the contrary.