The Riyadh Reckoning

Saudi Arabia’s campaign against the UAE’s proxy network signals the end of an era in Middle Eastern power politics

The explosions that lit up the night sky over Mukalla in the final days of December announced more than the destruction of weapons shipments in a Yemeni port. They marked the moment when one Gulf power decided that the accumulated costs of patience had finally exceeded the price of confrontation. The strikes that targeted arms caches and logistical nodes linked to the Southern Transitional Council were not, as some initial reports suggested, a limited tactical response to a specific provocation. They were something far more consequential: a declaration that the architecture of regional influence built through proxies, port contracts, and deniable operations had reached the end of its useful life. When the dust settled over the Hadramout coast, the map of Arabian geopolitics had fundamentally changed. The question was no longer whether Saudi Arabia and the United Arab Emirates could manage their differences behind closed doors. The question was whether the Emirati model of indirect power could survive at all.

To understand what happened in those December days, one must first understand what had been building for years beneath the surface of Gulf unity. The Saudi-Emirati partnership had long been presented as the anchor of regional stability, a marriage of convenience between the peninsula’s largest economy and its most ambitious strategic operator. Together they had waged war in Yemen, confronted Iranian influence across the Middle East, and projected Gulf power into arenas from Libya to the Horn of Africa. But partnership masked a fundamental divergence in how each state understood the nature of power itself. Saudi Arabia, with its vast territory, massive population, and position as custodian of the holy cities, had always conceived of influence in traditional terms: territorial control, state sovereignty, and the direct projection of military and economic might. The Emirates, smaller in geography and population but possessed of outsized wealth and strategic imagination, had constructed a different model entirely, one built on the creative use of the interstices between states, the gaps in governance where non-state actors could be cultivated, where port operators could substitute for navies, where private military companies could accomplish what national armies could not.

This divergence was manageable while the two powers faced common enemies and shared common fears. The Iranian threat, the chaos unleashed by the Arab uprisings of 2011, and the uncertainty of American commitment under successive administrations had provided sufficient glue to hold the alliance together even as the cracks widened. But by late 2025, the context had shifted. The Saudi-Iranian rapprochement brokered in Beijing had reduced the immediate pressure of the Iranian threat. The Yemen war, while unresolved, had settled into a grinding stalemate that no longer threatened Riyadh’s borders with the same urgency. And the American presidential transition had created a window of uncertainty during which regional powers sensed both opportunity and peril. In this moment of fluidity, the accumulated contradictions of the Saudi-Emirati relationship could no longer be contained.

The trigger, when it came, revealed how far the two powers had drifted apart. The events of December 2025 centered on the Southern Transitional Council, the separatist movement that had carved out de facto independence for southern Yemen with generous Emirati backing. The STC represented everything about the Emirati approach to regional influence: it was a non-state actor that could be cultivated, armed, and directed without the formal obligations of state-to-state relations. It provided Abu Dhabi with a foothold in strategic ports without the burden of governing territory. It could be used to influence Yemeni politics while maintaining plausible deniability. And it served as a buffer against the influence of both the Houthi movement in the north and the Islamist militias that had dominated southern Yemen before the STC’s rise.

But the STC also represented everything that had come to irritate Riyadh. From the Saudi perspective, the Council was a tool of fragmentation in a region where state collapse had already demonstrated its catastrophic consequences. The proliferation of armed groups outside formal state control, the creation of mini-states within nominally sovereign territories, and the normalization of secessionist movements all threatened the very order that Saudi Arabia sought to construct. The Kingdom had invested heavily in the restoration of the Yemeni government, not out of particular affection for the existing political arrangements in Sanaa, but because the alternative, a Yemen fractured into warring statelets, represented a permanent source of instability on its southern border. Every arms shipment to the STC, every training mission for its fighters, every diplomatic gesture that treated the Council as a legitimate political actor, was seen in Riyadh as an investment in the dissolution of state sovereignty that contradicted Saudi strategic interests.

The December crisis brought these contradictions into the open. What exactly transpired in those days remains subject to conflicting accounts, but the broad outlines are clear. Saudi intelligence had tracked weapons shipments arriving at Mukalla port, the historic trading center on the Hadramout coast that served as one of the STC’s principal strongholds. These shipments, Riyadh concluded, were intended to bolster separatist forces in preparation for a confrontation with the Yemeni government forces that Saudi Arabia had been painstakingly rebuilding and supporting. The timing mattered. The transition period in Washington meant that American attention was necessarily focused inward, creating a window during which regional powers could test boundaries without immediate fear of superpower intervention. Saudi decision-makers calculated that the moment had come to draw a line that had been approached repeatedly but never crossed.

The strikes that followed were precise and devastating. Saudi aircraft destroyed arms caches and logistical facilities that enabled the STC’s military operations. The message was unmistakable: the Kingdom would no longer tolerate the militarization of forces that threatened Yemeni unity, regardless of who backed them. But the strikes were only the visible component of a broader campaign. Simultaneously, Saudi-backed Yemeni government forces advanced on STC positions, exploiting the disruption caused by the air campaign to seize territory that the separatists had held for years. The speed of the collapse surprised even seasoned observers. The STC, which had presented itself as a disciplined military force and a viable governing authority, melted away before the combined pressure of Saudi airpower and ground advances. Its leaders, who had built careers on bold rhetoric about southern independence, proved unable or unwilling to mount a coherent defense.

The most telling moment came with the flight of Aidarous al-Zubaidi, the Council’s president and the face of southern separatism. Al-Zubaidi had been summoned to Riyadh for consultations, a summons that carried the weight of the power that had made his movement possible. His refusal to appear was itself a significant signal, suggesting that the STC leadership understood that the Saudi summons was not an invitation to negotiation but a prelude to subordination. But his subsequent flight from Yemen, reportedly facilitated by Emirati officials who arranged his extraction, was the death knell for the separatist project as a serious military-political force. A leadership that cannot stand its ground, that flees rather than fights or negotiates, forfeits any claim to statehood. The image of al-Zubaidi escaping while his forces dissolved provided the visual confirmation of what the Saudi strikes had asserted: the proxy model, when confronted by direct sovereign power, lacked the legitimacy and resilience to endure.

The significance of the Mukalla strikes extends far beyond the immediate collapse of the STC’s territorial control. They represent a turning point in the Saudi approach to regional security, a shift from management through partnership to unilateral assertion of red lines. For years, Riyadh had tolerated Emirati activities that it viewed with skepticism or outright opposition, calculating that the costs of confrontation outweighed the benefits of correction. The accumulation of these tolerations, the acceptance of proxy forces and port acquisitions and media campaigns that complicated Saudi strategic objectives, came to be seen in Riyadh as a mistake that had emboldened rather than satisfied the smaller power. The December strikes signaled that this period of accommodation had ended. The Kingdom would now define its national security interests in zero-sum terms, treating the tools of Emirati influence not as differences of tactical approach but as direct threats to be neutralized.

This shift in Saudi posture reflects a broader evolution in how the Kingdom understands its position in the regional and global order. Under Crown Prince Mohammed bin Salman, Saudi Arabia has pursued a transformation agenda that extends well beyond economic diversification into a fundamental reimagining of the state’s role in the world. The Vision 2030 program, with its focus on opening the economy, modernizing society, and projecting soft power through investment and culture, is matched by a hard power strategy that emphasizes sovereign capacity over alliance dependence. The Saudi military has been rebuilt with billions in Western arms purchases, but more significantly, the will to use that military has been reasserted after years of frustrating stalemate in Yemen. The strikes on Mukalla demonstrated not just capability but resolve, the willingness to accept the diplomatic costs of confronting a former partner in order to establish clear boundaries.

The confrontation also illuminates the changing nature of power in the Middle East more broadly. The region has been transformed by the proliferation of non-state actors, the erosion of state institutions, and the intervention of external powers through layered networks of proxies and affiliates. The Syrian civil war, the Iraqi state’s fragmentation, the Libyan collapse, and the Yemeni disaster all demonstrated the consequences of this model. States that could not control their territory became playgrounds for militias, warlords, and foreign sponsors competing for influence through indirect means. The result was not stability but perpetual conflict, not managed competition but humanitarian catastrophe. The Saudi strikes represent a bet that this model has exhausted its potential, that the region is ready for a return to state-based order in which sovereignty is respected, borders are meaningful, and military force is exercised by recognized governments rather than their deniable surrogates.

Whether this bet is correct remains to be seen. The forces of fragmentation are deeply rooted in the region’s political economy, in the grievances of marginalized populations, in the opportunities created by weak governance and external sponsorship. The STC may have collapsed in December, but the southern Yemeni grievances that gave rise to it remain unresolved. The port networks that the Emiratis constructed across the Horn of Africa still exist, their commercial and strategic value undiminished by the political crisis. The underlying conditions that enabled the proxy model, the incentives for external powers to cultivate non-state allies, the weaknesses of state institutions across the region, all persist. A Saudi victory in this particular confrontation, however decisive, does not resolve these deeper dynamics.

Nevertheless, the immediate consequences of the Mukalla strikes have been far-reaching. The collapse of the STC’s territorial control has shifted the balance of power within Yemen decisively toward the government forces that Saudi Arabia supports. The separatist movement, which had controlled Aden and much of the southern coast, has been reduced to a rump political force whose leaders are in exile and whose fighters are dispersed. The government in Aden, restored to something approaching genuine authority for the first time in years, now faces the challenge of consolidating control and extending governance to territory that has been effectively autonomous. This is a formidable task, given the destruction of state institutions, the proliferation of armed groups, and the humanitarian catastrophe that has unfolded over years of war. But the Saudi intervention has created the possibility of Yemeni reunification, however distant that prospect may remain.

Beyond Yemen, the confrontation has reshaped relationships across the Red Sea and Horn of Africa. The Emirati port network, which had been constructed through a combination of commercial investment, security agreements, and political relationships with local authorities, now faces systematic challenge. Saudi Arabia has moved to cancel or renegotiate security arrangements that gave the UAE leverage over key maritime facilities. New coordination tracks involving Saudi Arabia, Egypt, and regional partners have emerged to challenge Emirati influence over navigation routes and port operations. The competition for control of the Bab el-Mandeb strait, through which passes a significant portion of global trade, has intensified, with Saudi and Egyptian forces positioning to assert greater control over the approaches to this vital chokepoint.

The Sudanese theater has become particularly significant. The civil war that has devastated Sudan since 2023 has created opportunities for external powers to cultivate influence with the various factions competing for control of the state. The UAE has been accused of supporting the Rapid Support Forces, the paramilitary organization that has fought the Sudanese army across the country. Saudi Arabia, by contrast, has positioned itself as a mediator and potential stabilizer, hosting negotiations and building relationships with the internationally recognized government. The Saudi-Emirati competition in Sudan is a proxy struggle in reverse: where the UAE has traditionally used proxies to project power, Saudi Arabia is now using state-to-state relationships to contain Emirati influence. The reported targeting of UAE-linked supply routes into Sudan by Saudi-Egyptian coordinated operations represents a direct assault on the logistical infrastructure that sustains the proxy model.

The struggle extends into the realm of information and narrative. The confrontation has unleashed a media war in which each side seeks to define the meaning of events for regional and global audiences. Saudi Arabia has launched a sustained campaign framing the UAE as a source of regional instability, emphasizing the connections between Emirati support and the fragmentation of states, the proliferation of militias, and the obstruction of diplomatic solutions. This narrative positions Saudi Arabia as the defender of state sovereignty and regional order, a role that resonates with anxieties about state collapse that have been building since the Arab uprisings. The Emirati response has been notably less direct, relying on Western consulting firms, lobbying operations, and sympathetic media outlets to counter the Saudi narrative. This asymmetry has reinforced the perception that Abu Dhabi is operating defensively, unable to present its regional activities in straightforward terms that would stand public scrutiny.

The timing of the confrontation, coinciding with the American presidential transition, raises questions about Riyadh’s calculations regarding the new administration. The Trump administration’s approach to the Gulf has historically emphasized partnership with Saudi Arabia and commercial relationships with the UAE, but has also been characterized by unpredictability and a transactional approach to alliance. The Saudi decision to escalate against Emirati interests during the transition period suggests confidence that the new administration would not intervene decisively against Saudi interests, or perhaps a calculation that establishing facts on the ground before Washington’s attention turned fully to the region would make any subsequent intervention more difficult. Whether this calculation proves correct will significantly shape the trajectory of Saudi-American relations in the coming years.

The broader implications of this rupture extend to the architecture of regional security in the Middle East. The Saudi-Emirati alliance had been a central pillar of the anti-Iranian coalition, of the war in Yemen, and of the broader effort to contain Iranian influence across the Arab world. The collapse of this alliance, or its transformation into open rivalry, fundamentally reconfigures the strategic landscape. It creates opportunities for Iranian diplomacy, as Tehran seeks to exploit divisions among its adversaries. It complicates American strategy, which has relied on Gulf unity to support regional containment. And it raises the prospect of a more multipolar Middle East, in which competition among Arab powers becomes a defining feature of the regional order, alongside the traditional rivalries between Arab states and Iran, and between regional powers and external great powers.

The question of whether the proxy model itself is exhausted cannot be answered by a single confrontation, however dramatic. The incentives that have driven external powers to cultivate non-state actors, the gaps in state capacity that create opportunities for proxy influence, and the tactical advantages of deniability in a world of state sovereignty all persist. The Emirati approach to power projection, refined over years of operation in conflict zones across the Middle East and Africa, represents a sophisticated adaptation to the realities of a region where formal state institutions have often failed and where informal networks provide the actual mechanisms of governance and control. The collapse of the STC in Yemen is a setback for this model, but it is not necessarily a verdict on its fundamental viability.

What the Mukalla strikes do demonstrate is that the proxy model has limits, that there are circumstances in which direct sovereign power can overwhelm the networks of influence that indirect approaches construct. The Saudi decision to act directly, to accept the costs and risks of confrontation with a former partner, to prioritize clear strategic interests over the diplomatic complications of alliance management, represents a different kind of adaptation. It is an adaptation to a regional environment in which the consequences of fragmentation, the threats posed by state collapse, and the destabilizing effects of perpetual proxy warfare have become intolerable to a major power with the capacity to act.

The future of the Saudi-Emirati relationship remains uncertain. The depth of the rupture, the public nature of the confrontation, and the fundamental divergence in strategic vision that it has revealed suggest that a simple return to the previous patterns of cooperation is unlikely. The two powers may find ways to manage their competition, to establish new rules of engagement that prevent the current rivalry from escalating into more destructive conflict. They may discover that shared interests in regional stability, in economic development, and in managing the relationship with Iran create sufficient common ground to sustain a more limited partnership. Or they may settle into a prolonged rivalry, competing for influence across the Middle East and Africa, each seeking to demonstrate the superiority of its model, each attempting to constrain the activities of the other.

What is clear is that the old order has passed. The brief moment of Gulf unity, forged in the common threats of the 2010s and sustained by the personal relationships between ambitious young leaders, has given way to a more contested and competitive environment. The Saudi strikes on Mukalla were not merely an operational response to a tactical problem. They were a declaration that the regional order would be rebuilt on different foundations, that the tolerance for fragmentation and proxy warfare had ended, and that the future would belong to those who could project power directly and consolidate control effectively. The Riyadh reckoning has begun, and the Middle East will be reshaped by its consequences for years to come.