The relationship between Saudi Arabia and Yemen stands among the most consequential and enduring geopolitical dynamics in the Middle East. Linked by an approximately 1,800-kilometer border, intertwined tribal networks, and a shared Islamic heritage, the two countries have nevertheless followed sharply divergent political and economic trajectories. Saudi Arabia emerged as a wealthy regional power under a centralized monarchy, while Yemen evolved into one of the Arab world’s most politically fragmented and economically challenged states.
Over the past century, their relationship has been shaped by territorial disputes, ideological competition, regional power struggles, and security concerns. Geography has made cooperation unavoidable, while politics has repeatedly transformed the border into a zone of tension and contestation.
Historical Foundations and the Legacy of 1934
The origins of modern Saudi-Yemeni relations can be traced to the early twentieth century, when political boundaries across the Arabian Peninsula were being redrawn. Long before the emergence of modern states, Yemen occupied a prominent position in regional commerce. Known in antiquity as *Arabia Felix*, it benefited from fertile lands and strategic trade routes connecting the Arabian Peninsula to Africa, the Mediterranean, and Asia.
The rise of the Saudi state under King Abdul Aziz Al Saud altered the regional balance of power. As the Kingdom consolidated control over the Arabian Peninsula, disputes with the Mutawakkilite Kingdom of Yemen became increasingly difficult to avoid. These tensions culminated in the Saudi-Yemeni War of 1934, which ended with the Treaty of Taif.
Under the agreement, Yemen relinquished claims to the strategically important regions of Asir, Jizan, and Najran. While the treaty established a framework for peace, it also left a lasting imprint on Yemeni political consciousness. For many Yemenis, the territorial settlement became a symbol of unequal power relations that continued to influence perceptions of Saudi Arabia for decades.
Geography as a Strategic Determinant
Geography remains the most enduring factor shaping Saudi-Yemeni relations. The border stretches from the mountainous and agriculturally productive western highlands to the vast deserts of the Rub’ al Khali in the east. This landscape presents both opportunities and vulnerabilities.
For Saudi Arabia, the frontier has long represented a security challenge. Cross-border smuggling, tribal movements, militant infiltration, and instability within Yemen have repeatedly generated concerns in Riyadh. Yemen, meanwhile, occupies a position of exceptional strategic importance due to its proximity to the Bab al-Mandab Strait, one of the world’s most critical maritime choke points.
The waterway links the Red Sea with the Gulf of Aden and serves as a major artery for international trade and energy shipments. Any disruption to maritime traffic through this corridor carries implications not only for regional states but also for global commerce. Consequently, developments inside Yemen are viewed in Riyadh through a broader lens of economic and national security.
Ideological Competition During the Cold War
The geopolitical rivalry between the two countries intensified during the Cold War. The 1962 revolution in North Yemen overthrew the monarchy and triggered a civil war that quickly attracted external actors. Saudi Arabia supported royalist factions, viewing the spread of republican and revolutionary ideologies as a threat to regional stability and monarchical rule.
At the same time, Egyptian President Gamal Abdel Nasser intervened on behalf of republican forces, transforming Yemen into a major arena of Arab ideological competition. The conflict became one of the most significant proxy confrontations in the Middle East during the 1960s.
The situation became even more complex after British withdrawal from southern Yemen. The emergence of South Yemen as the Arab world’s only openly Marxist state introduced an additional ideological challenge for Riyadh. Throughout the following decades, Saudi Arabia sought to contain hostile political currents by cultivating relationships with tribal leaders, political figures, and military elites across Yemen. Financial patronage became a central instrument of Saudi influence, allowing Riyadh to shape political outcomes while preventing the emergence of a strong and potentially adversarial Yemeni state.
Unification and Renewed Tensions
The collapse of the Soviet Union paved the way for Yemeni unification in 1990 under President Ali Abdullah Saleh. However, hopes for a stable relationship between the newly unified republic and Saudi Arabia quickly encountered difficulties.
During the 1990-1991 Gulf War, Yemen adopted a position that diverged from Saudi and Gulf Cooperation Council interests. Riyadh responded by expelling nearly one million Yemeni workers, a move that deprived Yemen of a critical source of remittance income and deepened its economic difficulties.
Although bilateral relations gradually improved and the 2000 Treaty of Jeddah formally settled outstanding border disputes, Yemen remained highly vulnerable to Saudi economic and political leverage. The imbalance of power continued to define interactions between the two neighbours.
The Houthi Movement and the Regional Proxy Conflict
The Arab Spring upheavals of 2011 fundamentally altered Yemen’s political landscape. The resignation of President Saleh created a fragile transitional period that weakened state institutions and opened space for new political actors.
Among the most significant beneficiaries were the Houthis, also known as Ansar Allah, a movement originating in northern Yemen. By 2014, Houthi forces had seized Sana’a and expanded their control across large parts of the country, eventually forcing the internationally recognized government into exile.
For Saudi Arabia, the Houthi advance represented a major strategic challenge. Riyadh increasingly viewed the movement through the prism of its broader rivalry with Iran, arguing that Tehran was expanding its influence along Saudi Arabia’s southern frontier.
In March 2015, Saudi Arabia launched Operation Decisive Storm and assembled a coalition of regional partners with the objective of restoring the internationally recognized government. What was initially expected to be a short campaign evolved into a prolonged and costly conflict.
Over time, the war transformed into one of the Middle East’s most prominent proxy confrontations. As the conflict intensified, the Houthis developed increasingly sophisticated asymmetric capabilities, including drones, cruise missiles, and ballistic missiles. Repeated attacks against Saudi oil infrastructure, airports, and strategic facilities demonstrated the ability of relatively low-cost systems to challenge a far wealthier and technologically advanced adversary.
The conflict also generated one of the world’s most severe humanitarian crises, devastating Yemen’s infrastructure and economy while exacerbating food insecurity and displacement.
De-escalation and an Uncertain Future
Recent years have witnessed a gradual shift away from open confrontation. A United Nations-brokered truce significantly reduced large-scale hostilities, while the Saudi-Iran rapprochement facilitated by China in 2023 created new diplomatic opportunities.
Today, Saudi Arabia’s priorities are increasingly shaped by Vision 2030 and the desire to concentrate resources on domestic economic transformation rather than prolonged regional conflicts. Stability along the southern border has become an economic as well as a security imperative.
Yet lasting peace remains elusive. Yemen continues to be fragmented among multiple centers of power, including the Houthis in the north, the Southern Transitional Council in the south, and numerous tribal and local actors. The absence of a comprehensive political settlement means that underlying tensions remain unresolved.
The history of Saudi Arabia and Yemen illustrates the enduring influence of geography and power politics in shaping regional affairs. Despite decades of rivalry, intervention, and conflict, the destinies of both states remain closely interconnected. Saudi Arabia’s long-term security is linked to stability in Yemen, while Yemen’s prospects for reconstruction and recovery will continue to be shaped by the political, economic, and strategic weight of its northern neighbor.
A further development reshaping the regional security landscape emerged in August 2026 with the signing of the Makkah Joint Defense Agreement between Saudi Arabia, Pakistan, and Türkiye. The accord institutionalized a trilateral security framework designed to strengthen collective deterrence, expand defense cooperation, and deepen strategic coordination among the three states. Under its provisions, an armed attack against one member is to be regarded as an attack against all, reflecting a collective security principle comparable in concept to other mutual defense arrangements. The agreement also provides for enhanced military cooperation, defense-industrial collaboration, intelligence sharing, training initiatives, and the establishment of a permanent institutional framework to coordinate strategic policies.
For Saudi Arabia, the agreement reflects a broader shift in regional security strategy. Rather than relying exclusively on traditional Western security partnerships, Riyadh is increasingly diversifying its strategic relationships by strengthening ties with influential Muslim-majority powers. For Pakistan and Türkiye, the pact formalizes decades of defense cooperation with the Kingdom while expanding their collective geopolitical footprint across the Middle East, the Red Sea region, and South Asia. The establishment of a joint secretariat and mechanisms for long-term coordination suggests that the agreement is intended to evolve beyond a symbolic political declaration into a more structured security arrangement.
The significance of the agreement is particularly evident in the context of Yemen. Continued Houthi missile and drone threats against Saudi territory have highlighted Riyadh’s desire to strengthen collective deterrence and reinforce the security of critical energy infrastructure, maritime trade routes, and the Bab al-Mandab corridor. Although the Makkah Agreement has been officially described by its signatories as defensive in nature and not directed against any specific country, its emergence demonstrates how the Yemen conflict continues to influence the formation of new regional security architectures.
Yemen should not be understood solely through the Iran-Saudi rivalry. The country’s political fragmentation, economic collapse, tribal structures, southern separatism, and competing armed groups are independent drivers of the conflict. The Houthis also possess their own political agenda and military calculations.
The war therefore represents both a Yemeni civil conflict and a regional power struggle. That combination is what makes it so difficult to resolve. Even if Tehran and Riyadh reach an understanding, Yemen’s internal political divisions would remain. Conversely, a Yemeni political settlement would have wider regional implications because the country sits astride the Bab el-Mandeb and occupies a strategically important position between the Arabian Peninsula, the Red Sea and the Horn of Africa.
Yousaf Khan : The author is a defence expert with deep insight in phenomenal developments taking place in field of defence. He is a regular column writer for NEWSMAN. He can be reached out at : Mykhan10@yahoo.com