Yemen has been racked by war since 2014, pitting Iran-backed Houthi rebels against the internationally recognised government and a Saudi Arabian-led military force.
The United Nations found thousands of weapons recently seized in the Arabian Sea likely came from a single port in Iran, evidence Tehran is exporting arms to Yemen and elsewhere.
According to a confidential report by a UN Security Council panel of experts on Yemen, boats and land transport were used to smuggle weapons made in Russia, China and Iran into Yemen. The arms included rocket launchers, machine guns and sniper rifles, which had been seized by the US Navy in recent months.
In recent months, fighting in Yemen has seen Saudi-led coalition forces carry out air raids on the rebel-held capital Sanaa. Riyadh has said its 2015 intervention in Yemen was aimed at preventing an Iranian ally taking power on its doorstep.
