New Delhi (ABC Live) For nearly a decade, Saudi Arabia and the United Arab Emirates acted in close alignment across the Gulf. During that period, both capitals worked closely with Washington on security, counterterrorism, and regional stability. At the same time, oil wealth was channelled into diplomacy, infrastructure, and regional influence across West Asia and Africa.

However, that image of unity has steadily eroded. Instead, a visible rivalry has taken shape, driven by competing ambitions and diverging economic priorities. Notably, Yemen has emerged as the arena where one U.S. ally now confronts the other.

Beyond symbolism, the consequences extend well outside the Gulf. In practical terms, this rivalry now affects:

• The direction of the Yemen conflict and proxy alignments,

• Gulf investment flows and hub-to-hub competition,

• U.S. coalition management in the Middle East, and

• Red Sea trade routes alongside humanitarian supply chains.

Taken together, what once resembled a unified Gulf partnership has hardened into an intra-Gulf power struggle with global implications.

1) The Yemen Flashpoint: From Coalition to Confrontation

On 30 December 2025, Saudi-led forces struck Yemen’s port city of Mukalla. According to Saudi authorities, the operation targeted weapons and military vehicles unloaded from ships that originated in the UAE and were allegedly bound for the UAE-backed Southern Transitional Council (STC).

In response, Abu Dhabi rejected the allegation outright. By contrast, UAE officials stated that the vehicles were intended for their own deployed forces. Shortly afterward, the UAE announced the withdrawal of its remaining troops from Yemen.

ABC Live interpretation:
Seen in context, the Mukalla strike represents the clearest rupture yet between the two allied capitals. Rather than reflecting a shared anti-Houthi campaign, the episode reveals how coalition warfare has evolved into a direct competition over ports, militias, and post-war influence.

2) Structural Economic Competition: Riyadh vs. Dubai as Gulf Hubs

Beyond the battlefield, economic rivalry has taken centre stage in the dispute.

Over recent years, Saudi Arabia has relied more heavily on policy tools—most notably Regional Headquarters (RHQ) requirements for government contracts—to draw multinational firms toward Riyadh. As a result, Dubai’s long-dominant services and finance ecosystem now faces sustained pressure.

Previously, Gulf economies largely complemented one another. Today, however, direct competition has emerged over corporate headquarters, capital inflows, logistics positioning, and aviation-finance connectivity.

ABC Live interpretation:
Consequently, economic competition has shifted from market rivalry into a zero-sum geopolitical contest.

3) Divergent Regional Playbooks: Risk Management vs. Power Projection

Although both capitals share concerns over Iranian influence and militant networks, their regional playbooks now diverge clearly.

In particular, Saudi Arabia has prioritised risk management. Accordingly, policymakers have focused on de-escalation to protect domestic economic reforms and foreign investment confidence tied to Vision-linked goals.

By contrast, the UAE continues to favour power projection. In practice, this approach involves backing local partners such as the STC. At the same time, Abu Dhabi has focused on ports, coastal trade routes, and long-term footholds from the Red Sea to the Horn of Africa.

ABC Live interpretation:
Even when objectives overlap, mismatched methods deepen mistrust. Over time, tactical differences convert into strategic rivalry.

4) Washington’s Dilemma: Allies Pulling in Different Directions

For Washington, which depends on both capitals for regional security frameworks, this divergence creates growing challenges. Meanwhile, coalition management has become more costly as tensions rise. During the Mukalla crisis, U.S. officials—including Secretary of State Marco Rubio—engaged both sides through sustained diplomatic channels.

ABC Live interpretation:
Ultimately, allies can drift into rivalry without a formal rupture once strategic competition outweighs strategic alignment.

Why This Rivalry Is Hard to Contain

A) Economic Scale vs. Connectivity

According to the International Monetary Fund’s World Economic Outlook (October 2025), Saudi Arabia’s GDP in current prices substantially exceeds that of the UAE. At the same time, the UAE retains a clear advantage in connectivity and financial networks.

Interpretation:
As a result, Riyadh reshapes incentives through scale. Conversely, Abu Dhabi projects influence through logistics and global linkages.

B) Military Capacity and Coercive Signalling

Data from the Stockholm International Peace Research Institute (SIPRI) places Saudi Arabia among the region’s top military spenders. Consequently, both states retain the ability to signal coercively, which raises escalation risks.

C) Oil-Price Pressure

With oil prices under sustained pressure through 2025, competition for alternative income streams has intensified. When hydrocarbon rents weaken, economic competition hardens into strategic rivalry.

D) Yemen’s Humanitarian Constraint

Estimates cited by the Council on Foreign Relations indicate that hundreds of thousands have died in Yemen, largely from indirect causes. Therefore, any disruption to ports risks immediate humanitarian fallout, raising diplomatic costs even as rivalry deepens.

So Why Did Two U.S. Allies Become Hostile?

1. First, they stopped sharing a single regional map.
2. Second, economic rivalry hardened into coercive state policy.
3. Third, proxy politics escalated into direct signalling.
4. Finally, Washington was drawn in because both partners remain indispensable.

What Happens Next: Three Scenarios to Watch

Scenario 1 — Managed Rivalry:
Limited de-confliction on Yemen zones and port access.

Scenario 2 — Proxy Collision:
Local consolidation triggers counter-moves and coalition strain.

Scenario 3 — Market Shock:
Oil stress combines with politics. As a result, shipping risk rises, and investment slows.

How ABC Live Verified This Report

To ensure accuracy, ABC Live relied on multiple independent sources:

• Associated Press — Mukalla strike reporting
  https://apnews.com/article/9fc56e4678a12f56d61b1ecf855d4a4e

• Reuters — Saudi–UAE tensions
  https://www.reuters.com/world/middle-east/saudi-led-coalition-yemen-calls-civilians-mukalla-port-evacuate-saudi-state-news-2025-12-30/

• IMF World Economic Outlook (October 2025)
  https://www.imf.org/external/datamapper/datasets/WEO

• SIPRI Military Expenditure Database
  https://www.sipri.org/databases/milex

• Council on Foreign Relations — Yemen Conflict Tracker
  https://www.cfr.org/global-conflict-tracker/conflict/war-yemen

What Remains Unverified (Disclosure)

As of 2 January 2026, ABC Live cannot independently confirm the full Mukalla shipment manifest, verified chain-of-custody evidence linking the cargo to an STC operational plan, or any classified intelligence underlying U.S. diplomatic communications.

Accordingly, verified facts are clearly separated from contested claims. Moreover, this section will be updated if UN panels, neutral inspectors, or official port records become public.

Right of Reply

ABC Live invites responses from relevant authorities. In particular, clarifications are welcome from Saudi, Emirati, and Yemeni representatives.

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