Oil Giants' Regional Power Play Destabilizes Middle East Markets

RIYADH AND ABU DHABI’S POWER STRUGGLE TURNS NEIGHBORING STATES INTO CONFLICT ZONES

Saudi forces bombed two Emirati vessels at the Yemeni port of Mukalla on December 30, 2025, a strike that made the financial and strategic stakes of the Saudi-Emirati rivalry impossible to ignore. The two oil-rich monarchies, which together command some of the world’s largest sovereign wealth pools and defense budgets, have increasingly deployed that capital and military capacity to advance competing interests across the Middle East and East Africa. The result is a set of proxy arenas, drawn from the world’s poorest and most fragile nations, where Riyadh and Abu Dhabi fund, arm, and back opposing factions.

The December bombing was triggered by the UAE-backed Southern Transitional Council (STC) seizing control of Yemen’s easternmost governorates. The Saudi military response was swift. Emirati personnel and equipment were hastily withdrawn from Yemen, and the STC’s territorial gains unraveled rapidly across the country. An organization that had appeared to consolidate power in Yemen’s east lost its position almost as quickly as it had gained it, a demonstration of how dependent proxy actors are on continued external patronage.

What changed is the character of the competition itself. Riyadh and Abu Dhabi have abandoned any pretense of unified regional strategy, moving from a period of managed, largely private rivalry to open hostility. Previous competition occurred through backchannels and indirect influence; the Mukalla bombing signals that both capitals are now willing to use force directly against each other’s assets rather than limiting confrontation to proxy skirmishing.

The economic logic driving the rivalry is straightforward. Both monarchies leverage their hydrocarbon revenues to purchase influence in states that lack the resources to resist external pressure. Sudan, South Sudan, Yemen, and Somalia rank among the poorest nations globally and carry the heaviest burdens of ongoing conflict. They cannot match the financial or military weight of distant patrons, making them susceptible to becoming staging grounds for competing Gulf ambitions. Resources that might otherwise flow toward development and stability are diverted instead to fund factions aligned with Riyadh or Abu Dhabi.

The rivalry shapes concrete outcomes: which armed groups receive funding, which political factions gain international backing, and which regional settlements align with one capital’s interests over the other’s. In Yemen, the STC’s rapid collapse following the Saudi bombing illustrates how quickly the return on proxy investment can evaporate when an external patron turns hostile. The organization had appeared to be consolidating a durable position before the intervention reversed its trajectory almost overnight.

Meanwhile, the rivalry operates without meaningful constraints from international institutions or regional governance structures. Neither the Gulf Cooperation Council nor broader multilateral bodies have demonstrated the capacity or willingness to impose costs on either monarchy for escalation. That absence of external discipline matters for investors and operators with exposure to the affected regions: the risk calculus in Yemen, Sudan, and the Horn of Africa now includes the possibility of direct Saudi-Emirati confrontation, not merely competition through proxies.

The public nature of the feud marks a structural shift in Gulf geopolitics. Internal restraints on escalation appear to be weakening. As the rivalry deepens and becomes more openly acknowledged, the question for market-watchers is whether either monarchy faces sufficient economic or reputational costs to moderate its behavior, or whether the competition will continue to intensify across multiple theaters with neighboring populations absorbing the consequences.