Yemen is demanding that Iran stop arming and supporting insurgents in the country, blasting Tehran for interfering in the state’s internal affairs. Sanaa has also asked the U.N. Security Council to investigate an incident last month in which a ship carrying a cache of suspected Iranian-made “anti-aircraft missiles [and] C4 high explosives materials” was intercepted en route to the country. Arab states have become increasingly vocal in criticizing Iran for supporting anti-government forces within their country, and the Gulf Cooperation Council recently issued a communique in which the body “expressed its rejection and condemnation of the continuing Iranian interference in the affairs of the Gulf Cooperation Council’s states.”