The Saudi-UAE split is ending. That may be bad news for Yemen.

The immediate trigger is the Houthis’ lightning advances across Yemen. Their gains have created a common danger for Saudi Arabia and the UAE, despite the countries’ serious disagreement over Yemen’s political future. A shared threat has reopened dialogue after their December 2025 rupture.

On October 18, Saudi Defense Minister Khalid bin Salman met UAE President Mohammed bin Zayed. The meeting publicly emphasized historic ties. Separately, the Guardian reported that Abu Dhabi agreed to resume payments to government-aligned forces in southern Yemen, while Saudi aircraft would support those forces against the Houthis.

Cooperation remains limited and uncertain. The UAE is expected to rely on local partners rather than send its own troops back into combat. Riyadh and Abu Dhabi may cooperate against the Houthis while still backing separate forces elsewhere, potentially deepening Yemen’s fragmentation rather than resolving it.

The Houthis are a Yemeni movement officially known as Ansar Allah. In the article, they are the force whose rapid advances are reshaping the conflict. Their battlefield gains have created a shared threat for Saudi Arabia and the UAE, even though both countries support different political futures for Yemen.

Saudi Arabia sees Houthi gains near its southern neighbor as a national-security danger. The UAE also faces direct risks. The Houthis struck Emirati territory in 2022, demonstrating the danger of renewed involvement for a country that depends on presenting itself as a secure commercial oasis.

The Houthis’ improved missile and drone capabilities make direct Emirati combat less likely. Abu Dhabi may instead support local anti-Houthi factions through money and logistics. Saudi Arabia could provide air support, but stronger cooperation might still leave both countries competing through separate Yemeni partners.

Saudi Arabia and the UAE began leading a war against the Houthis in 2015. Their involvement has never meant supporting only one unified Yemeni force. Riyadh backed the internationally recognized government, while Abu Dhabi cultivated southern armed groups and other local partners.

The article does not provide a precise count of major Yemeni forces. It identifies several important partners: the internationally recognized government, the separatist Southern Transitional Council, the Giants Brigades, and Tarek Saleh’s National Resistance Forces. It also stresses that both countries relied on myriad local armed partners.

That network matters because influence can survive a formal military withdrawal. Some Emirati-backed factions later merged into Saudi-led structures, but command networks and personal loyalties remained. Abu Dhabi can therefore reactivate support without returning its own forces to Yemen, while Riyadh can continue working through government-aligned forces.

Saudi Arabia and the UAE entered Yemen’s war with a shared enemy but different visions for the country. Riyadh wanted one government capable of defeating the Houthis. Abu Dhabi instead prioritized southern Yemen’s independence and cultivated southern armed groups, especially the Southern Transitional Council.

The difference became especially clear around ports. The UAE sought influence over ports including Aden, near the Red Sea’s mouth. Saudi Arabia viewed separatist advances in areas bordering its territory as a direct national-security threat. Their competing priorities made cooperation fragile from the beginning.

These disagreements produced open conflict among their local partners. In 2019, Southern Transitional Council and government forces fought for Aden. Riyadh and Abu Dhabi then created a fragile power-sharing arrangement, but the underlying rivalry remained. The December 2025 STC advance in Hadramawt and al-Mahra exposed that unresolved conflict again.

The Southern Transitional Council, or STC, is a UAE-backed separatist organization in southern Yemen. It represents Abu Dhabi’s preference for advancing southern Yemen’s independence rather than restoring a single unified government. The STC is both a political actor and a military force with the ability to seize territory.

Its importance was demonstrated in 2019, when STC forces fought government forces for control of Aden. Riyadh and Abu Dhabi eventually brought the opposing factions into a fragile power-sharing agreement. In December 2025, STC forces captured large parts of Hadramawt and al-Mahra, both bordering Saudi Arabia.

That advance triggered a major Saudi reaction. Riyadh called it a direct national-security threat, struck a weapons shipment at Mukalla port, and demanded that remaining UAE forces leave Yemen. Although the STC was severely weakened, Abu Dhabi’s relationships and support networks remain available for reactivation.

A common enemy does not erase the rivalry between Riyadh and Abu Dhabi. Both countries maintain different relationships with Yemeni armed groups and different plans for Yemen’s political future. If they cooperate only against the Houthis, their competition could continue in areas outside Houthi control.

The mechanism is parallel influence. The UAE can reactivate financial and logistical support for partners such as the Giants Brigades and National Resistance Forces. Saudi Arabia can support government-aligned forces and provide air power. Those partners may pursue different commands, political goals, and territorial interests.

The result could be new fractures behind the front line. The article warns that Riyadh and Abu Dhabi might back parallel structures, especially in southern Yemen. Cooperation could therefore strengthen the anti-Houthi coalition in one area while constraining Saudi options or deepening fragmentation elsewhere.

Ports such as Aden matter because they combine economic and strategic value. Aden lies near the mouth of the Red Sea, making it important to the UAE’s effort to build influence in southern Yemen. Control or influence around a port can support commercial interests while giving an outside power a foothold in local security politics.

The UAE prioritized southern independence partly to gain control over ports including Aden. It cultivated armed groups that could hold territory and protect its wider commercial and security interests. The 2019 fighting between STC and government forces showed how port control could become a direct political struggle.

Ports also shape relations between local factions and outside sponsors. A power that supports forces around a port can gain leverage over territory, armed networks, and political arrangements. In Yemen, that leverage may help Abu Dhabi re-engage, but it can also limit Riyadh’s choices and intensify fragmentation.