On August 7, Saudi Arabia, Turkey, and Pakistan signed the Mecca Joint Defense Agreement, committing themselves to regard an attack on one as an attack on all. The comparison with NATO’s Article 5 was inevitable, and skepticism followed as quickly. The agreement contains no publicly disclosed operational commitments; its three signatories confront markedly different adversaries, and they remain embedded in broader strategic relationships that complicate any unconditional commitment to collective defense.
It is tempting, on these grounds, to regard the agreement as another instance of political exuberance, of the kind that abounds in the region’s history. That may yet prove correct. But this skepticism should not be allowed to obscure a more useful question: Why now? To answer this question, it helps to unpack the conditions under which collective-defense commitments succeed.
The logic of collective defense
Collective-defense arrangements are sustained neither by the breadth of the promises written into them nor by an external authority that compels participants to honor their commitments. Like other international agreements, they are self-enforcing by design.
As such, any collective defense arrangement must be compatible with the incentives of its participants at two stages. Ex-ante, joining the arrangement must leave each participant better off than remaining outside it. This is the participation condition. Ex-post, once the contingency covered by the agreement materializes, honoring the original commitment must remain preferable to reneging on it. This incentive compatibility gives the arrangement its credibility at the outset.
The participation condition is relatively straightforward. By joining a collective defense arrangement, countries can pool the risk of a potentially catastrophic event. As with insurance, each participant accepts obligations in exchange for assistance if attacked. That assistance reduces the expected cost of an attack, for example by lowering the probability of military defeat or limiting territorial and economic losses. Unlike conventional insurance, however, collective defense arrangements can also deter the insured event itself. With a potentially broader military response, the expected return to aggression diminishes for adversaries. Participation in collective defense arrangements can therefore improve a country’s position both conditional on an attack and by reducing the probability that the attack occurs in the first place.
The credibility condition is more stringent. Once an attack occurs, the deterrence benefit of the security arrangement is already sunk, and each participant must decide whether honoring its commitment remains preferable to staying out. That calculation depends on the direct security consequences of the attack for the prospective defender, the military and economic costs of intervention, the value of preserving its relationship with the attacked member and with the attacker, and the costs or benefits that third parties may impose on either course of action. If these considerations make reneging preferable ex post, the original commitment cannot be fully credible ex ante. The effectiveness of collective defense therefore rests not simply on what states agree to do on paper, but on whether the incentives they will face after an attack are consistent with the promises they make before it.
NATO offers an intuitive benchmark precisely because its credibility never rested on the literal force of Article 5, which has only been invoked once so far (after the 9/11 attacks). The treaty requires each ally to assist an attacked member but leaves the form of that assistance to the action each government “deems necessary.” What gave Article 5 strategic weight was an underlying convergence of interests. Soviet expansion that weakened one member also worsened the security of the others. Over time, common planning, an integrated command structure, interoperable forces, readiness arrangements, and forward deployments tightened that connection further by increasing both the capacity to act jointly and the costs of standing aside.
This analytical framework, together with the NATO benchmark, provides a useful basis for evaluating any collective-defense arrangements in the Middle East.
Stress-testing the Mecca Agreement
Viewed through this framework, the value of the Mecca Agreement is uneven across its three members. Saudi Arabia needs additional insurance the most: the current conflict has exposed the kingdom directly to Iranian missiles and disruptions to the energy and maritime infrastructure on which its economy depends. For Turkey and Pakistan, the need for additional protection is less obvious.
Turkey already benefits from NATO’s collective-defense commitment. It can benefit from a less structured access to Pakistan’s nuclear arsenal, particularly as Turkish relations with Israel deteriorate. But Islamabad cannot commit to risk a catastrophic retaliation on Turkey’s behalf. Its nuclear posture is centered on India, and such a commitment becomes still less credible once the United States enters the continuation game. Washington’s substantial military and financial leverage over Pakistan could sharply raise the costs of intervention.
Pakistan faces a similar problem in its own expectations. Its principal external threat is India, but neither Turkey nor Saudi Arabia has strong incentives to inherit that conflict. Turkey offered considerable political support to Islamabad during the 2025 confrontation, but entering a war is a qualitatively different commitment. Saudi Arabia has stronger reasons for restraint: its ties with India span energy, investment, trade, and defense. India’s military scale and the escalation risks of a conflict between two nuclear powers raise the costs further.
This leaves tensions with Iran as the main contingency in which their security interests overlap. Here the participation and credibility conditions begin to point in the same direction. Saudi Arabia has a direct interest in defending its territory and energy infrastructure; Turkey has an interest in keeping Iran’s regional influence in check; and Pakistan has large economic and security interests in Gulf stability and Saudi security. While these interests do not translate into a shared desire for war with Iran, they can support a narrower set of commitments such as air and missile defense, maritime protection, intelligence, and logistics without contradicting their own security interests.
The stress test therefore produces a narrow result. In its current form, the Mecca Agreement adds little credible deterrence against the principal adversaries of Turkey and Pakistan. Against Iran, by contrast, the security interests of the three countries overlap sufficiently for at least a bounded form of collective defense to be self-enforcing. The question is whether that narrow intersection of interests marks the limit of the Middle Eastern NATO or merely its starting point.
The bet on time
An Iran-centric explanation also helps account for why the Mecca Agreement emerged now. Although reportedly under negotiation for about three years, it was finalized while Saudi Arabia was already under military pressure from Iran and the Iran-aligned Houthis in Yemen. Launching a broad security architecture during an active conflict is an unusually risky undertaking. In this case, however, the very same conflict may be what makes the undertaking possible.
The war around Iran provides the three countries with a sufficiently common threat to make meaningful cooperation immediately valuable, while keeping that cooperation broadly compatible with American interests in containing Iranian power and protecting regional energy and maritime infrastructure. The present crisis therefore offers an unusually permissive setting in which to establish an arrangement whose longer-term purposes may extend well beyond Iran.
That longer horizon matters for two reasons. The first is hedging. Even a pact with limited present credibility can hedge against a future decline in U.S. interest in the region. The second is endogenous credibility. Joint production, technology transfer, and other relationship-specific investments raise the value of preserving the partnership and the cost of abandoning it. As those investments deepen, commitments that are not self-enforcing today may become so tomorrow. The Mecca Agreement may therefore become more credible over time not because stronger promises will be made, but because the payoffs underlying commitments will gradually change.
Conclusion
The early skepticism toward the Mecca Agreement is understandable, but it may underestimate the strategic horizon of its signatories. Outside the Iranian contingency, the agreement’s collective defense promise currently runs ahead of the incentives needed to sustain it. But that does not make the pact strategically hollow. The war in Iran may have provided the narrow convergence of interests needed to launch a broader framework whose credibility can deepen with military, technological, and economic interdependence. The more relevant question is therefore not whether Mecca is already a Middle Eastern NATO, but whether today’s limited alignment can make tomorrow’s collective defense commitments more self-enforcing.
