Saudi Jets Hit a Former Ally and Exposed the Real Fracture Inside the Gulf
By: Gavin Thorne – SeaPRwire – Security anxiety spikes when partners turn weapons on each other. On December 26, 2025 Saudi aircraft struck military positions held by Yemen’s Southern Transitional Council in Hadhramaut province. The targets belonged to a group that had fought alongside Riyadh against the Houthis. Smoke rose from the sites. No casualties were reported. Chinese state media carried the story the same day.
The Southern Transitional Council formed in 2017 with a clear goal of southern independence. In 2022 it joined the Saudi-led coalition and entered the Presidential Leadership Council. Surface cooperation never erased deeper rifts. Power and resource disputes kept recurring. Early December 2025 the STC launched its Bright Future Operation. Within two weeks it seized core zones of Hadhramaut and Mahra provinces. Hadhramaut is Yemen’s largest province. It holds the port of Mukalla on the Arabian Sea and roughly half the country’s oil reserves. The area also shares a long border with Saudi Arabia. Troop concentrations there registered as a direct security concern for Riyadh.
Saudi Arabia first tried diplomacy. On December 25 it issued a statement labeling the STC moves an unreasonable escalation that harmed Yemen’s interests. A joint military delegation with the United Arab Emirates traveled to Aden and demanded withdrawal of STC forces. The camps were to be handed to government or local units. The STC refused. Airstrikes followed the next day. The sequence shows a calculated shift from warning to limited force.
I recently spoke with a regional analyst who tracks Gulf alignments. He described the episode as less about Yemen itself and more about competing visions for the south. Saudi Arabia seeks a unified Yemen under structures it can influence. The United Arab Emirates has long backed the STC as a vehicle for a friendly buffer zone. Ports and oil fields matter. Influence over local forces matters. The STC functions as the UAE’s key local piece. Saudi strikes therefore carried a second message aimed at Abu Dhabi: unilateral expansion in Yemen will not be tolerated.
The Houthis gain breathing room. Coalition attention fractures when partners clash. Days before the strikes the Houthis and official Yemeni sides agreed to exchange three thousand prisoners. Momentum appeared to shift in their favor. Yemen’s war has already lasted more than a decade. United Nations figures cite over one hundred fifty thousand dead, millions displaced, and seven million people dependent on food aid. Fresh internal fighting among anti-Houthi forces adds another layer of strain to an already exhausted country.
Saudi Arabia carries its own fatigue. Eight years of conflict with the Houthis drained budgets. The China-brokered rapprochement with Iran allowed Riyadh to redirect energy toward domestic development. The December strikes look like a constrained warning rather than a full rupture. Riyadh still needs southern partners against the Houthis. At the same time it must protect its border and limit external encroachment. The operation attempted to serve three purposes at once.
Costs accumulate quickly. Every airstrike risks pushing the STC closer to the UAE and further from any unified command. Border security improves only if the underlying territorial grab is reversed. Diplomatic capital with Abu Dhabi erodes when force is used against a shared partner. International observers note the fragility. Yemen’s humanitarian crisis deepens when fighting multiplies. Reconstruction talks become harder. External mediators face a more fragmented set of interlocutors.
The endgame remains unresolved. Talks between Riyadh and the STC will matter. So will quiet consultations between Saudi Arabia and the United Arab Emirates. Resource control, port access and regional hierarchy sit at the center. No permanent allies exist in this arena. Interests dictate alignments. Until those interests are rebalanced the risk of further limited clashes stays elevated. Decision-makers should track whether the STC withdraws from the seized zones and whether joint Saudi-Emirati messaging reappears. Those two signals will indicate whether the December episode remains a contained warning or the start of deeper realignment.
Author bio: Gavin Thorne, senior researcher at an independent European strategic think tank specializing in Gulf security dynamics and intra-Arab rivalries.