Signed on 7 August 2026 by Türkiye, Pakistan and Saudi Arabia, the Mecca Joint Defence Agreement transformed their security cooperation into a collective commitment: an armed attack on one would be treated as an attack on all ( Gulf News ). Building on the Saudi–Pakistani defence pact of September 2025, the alliance brings together Saudi financial resources, Türkiye’s growing defence industry and Pakistan’s substantial military capabilities and nuclear status ( Associated Press ). Its significance lies in the prospect of these complementary strengths becoming a credible source of regional deterrence. Yet Yemen now poses a critical test: can three states with distinct strategic interests translate their shared pledge into sustained collective action?
The unfolding war in Yemen is an important test for the Mecca Alliance because it turns an abstract commitment to collective defence into concrete decisions about military assistance, leadership and the limits of solidarity. On 5 October, the three members agreed to implement their defence commitments and rapidly deploy agreed forces and capabilities to Saudi Arabia, bringing these questions into immediate focus ( Anadolu Agency ). Conflicts in the Middle East rarely end swiftly; many persist for years, even decades. With no clear end in sight to the war in Iran and Yemen already scarred by more than a decade of conflict, the latest escalation is unlikely to subside easily. The alliance’s commitments will therefore face a prolonged series of tests, as shifting battle lines, mounting costs and competing national priorities repeatedly challenge its members’ willingness to stand together.
The unfolding war in Yemen poses the Mecca Alliance’s most immediate test: whether it can turn its promise of collective defence into sustained cooperation in a potentially prolonged conflict. I argue that three problems could make this difficult: the absence of an accepted leader to coordinate a joint response, differing perceptions of common threats, and Saudi Arabia’s potential need for military support beyond what Türkiye and Pakistan are willing to provide. Together, these challenges could strain the alliance as the war continues and the costs of involvement rise.
First, the Mecca Alliance faces a structural leadership problem. Its members possess different sources of power, but these do not establish an accepted hierarchy among them. Saudi Arabia brings financial resources, Türkiye contributes defence-industrial capabilities, and Pakistan provides substantial military strength and nuclear status. As the War on the Rocks commentary “Three Patrons, Three Clients” argues, these complementary capabilities give each country leverage without allowing any one to dominate the others. Each consequently has reasons to seek influence over collective decisions while resisting subordination to its partners. Agreement on what each member can contribute does not necessarily settle who determines how those contributions will be used.
A prolonged conflict in Yemen could sharpen this tension. Even if all three agree on defending Saudi territory, they may disagree over whether that requires intercepting incoming missiles, striking launch sites inside Yemen or supporting a wider offensive. Riyadh’s exposure to attack would give it an urgent stake in these decisions, but would not automatically confer authority over Turkish or Pakistani forces. The danger is therefore not necessarily an immediate refusal to assist, but recurring bargaining over objectives, command and the distribution of costs as the war evolves. Unless effective decision-making arrangements can bridge these differences, the alliance could sustain limited defensive cooperation while struggling to agree on a broader strategy.
Second, the Mecca Alliance lacks a clearly defined common adversary, leaving its members room to interpret their commitments differently. As Murat Yeşiltaş points out in his commentary for Anadolu Agency, the three countries’ foreign-policy priorities do not fully overlap, making the identification of shared threats essential to effective cooperation. Ambiguity may initially facilitate agreement by allowing states to cooperate without fully aligning their foreign policies. During a prolonged conflict, however, it could expose disagreements over which threats require collective action and how far that action should extend.
Escalation in Yemen could make this ambiguity increasingly difficult to sustain. Türkiye and Pakistan have strong reasons to preserve relations with their neighbour. Yet growing Saudi demands for assistance against the Houthis could gradually give the alliance an anti-Iranian role, regardless of its original intentions. Measures intended to reassure Riyadh could therefore heighten Ankara’s and Islamabad’s fears of entanglement in a wider conflict. Yemen may force the three members to resolve a question their founding agreement left open: whether a shared commitment to defence also entails a shared definition of the enemy.
Third, Saudi Arabia’s vulnerability to sustained attacks could create an imbalance between its demand for protection and its partners’ willingness to provide it. The central issue is less whether Saudi Arabia is categorically the alliance’s weakest military member than whether it can defend its territory without prolonged external assistance. As a commentary in the Arab Center Washington DC argues, the kingdom’s new partnerships do not readily replace its reliance on American weapons, intelligence and air defence support. If Houthi attacks intensify or exhaust defensive resources, Riyadh could press Türkiye and Pakistan for increasingly substantial commitments of equipment, personnel and operational support.
This would sharpen the alliance dilemma between abandonment and entrapment: Saudi Arabia would fear inadequate support, while Türkiye and Pakistan would fear being drawn into a war beyond their intended commitments. Assistance might initially remain defensive, but attacks on deployed Turkish or Pakistani personnel could create pressure for retaliation and expand their involvement. Conversely, if Riyadh feels abandoned, it may turn more decisively to its traditional security partner, the United States, introducing another actor with its own strategic priorities and further complicating coordination within the alliance.
Ali Balcı – Sakarya University, International Relations
