Saudi Arabia's strike on Sana'a International Airport, followed by Houthi missile attacks on two Saudi airports, has opened a dangerous new phase in the Iran conflict. The immediate question is whether Riyadh has finally abandoned the strategic restraint it has maintained for months and is now preparing for direct confrontation with Iran. If that happens, Pakistan's obligations under the Strategic Mutual Defence Agreement will inevitably come under discussion.
The latest escalation should not be viewed in isolation. Reports suggest that an Iranian aircraft landed at Sana'a before the Saudi strike, reinforcing long-standing Saudi concerns that Yemen continues to be used to facilitate Iranian support for the Houthis. Yemen's internationally recognised government also condemned the reported use of Sana'a airport for activities benefiting the Houthis, arguing that civilian infrastructure was being exploited for military purposes. Riyadh's response was directed at that immediate threat. The subsequent Houthi attacks marked Tehran's decision to activate its most capable remaining regional proxy against Saudi Arabia.
The timing deserves attention. The Houthis have possessed missiles and drones capable of striking Saudi territory for years. Their military capability is not new. What has changed is Tehran's decision to employ them more aggressively after months of relative restraint. The decision also reflects the clerical establishment’s assessment that widening the conflict now offers its best remaining opportunity to alter a strategic trajectory that has increasingly turned against the IRGC across multiple theatres. In effect, Iran appears to be playing one of its last remaining strategic cards.
Pressure on the Iran regime is intensifying with every passing day. First, following renewed Iranian attacks on commercial shipping, Washington has shifted its military focus towards southern Iran and the Strait of Hormuz. President Trump has reinstated the U.S. naval blockade on Iranian shipping while declaring that Hormuz will remain open for international commerce, signalling that Washington is determined to deny Iran the ability to use the Strait as a strategic weapon. Britain's decision to proscribe the IRGC as a terrorist organisation further reflects a broader Western effort to isolate the organisation politically, financially and militarily.
Second, Iran's attempt to use Hormuz as leverage has produced the opposite effect. Rather than deterring its adversaries, attacks on commercial shipping have strengthened international support for freedom of navigation. France, the United Kingdom and other European states have reaffirmed their commitment to protecting maritime trade, while NATO has adopted a firmer position on maritime security. China, the largest importer of Gulf energy, also has little interest in allowing Hormuz to become an instrument of coercion. Even Oman, traditionally a neutral interlocutor, has not been spared Iranian pressure, underscoring Tehran's growing diplomatic isolation.
Third, pressure is also mounting across Iran's regional proxy network. Hezbollah has suffered extensive military degradation and no longer provides Tehran with the strategic deterrent it once did. Syria's government under Ahmed al-Sharaa continues consolidating state authority with growing Arab political and economic backing, reversing years of Syrian collaboration that enabled Hezbollah's military and logistical dominance in Lebanon. Together with the implementation of the Israel-Lebanon ceasefire framework, a more stable and Arab-aligned Syria is likely to constrain Hezbollah's cross-border supply routes and operating space rather than sustain them.
In Iraq, two recent government operations against militia-linked financial networks have begun to challenge an important source of funding for IRGC-backed armed groups. These developments coincide with closer coordination among Baghdad, Ankara and Arab Gulf states to strengthen Iraqi state institutions and reduce the influence of Iranian-backed militias. The recent expansion of U.S. Ambassador to Türkiye Tom Barrack's mandate to include Syria and Iraq reflects Washington's increasingly integrated approach to rolling back the IRGC's influence across the Levant.
Faced with mounting pressure across multiple fronts, Tehran's decision to unleash the Houthis appears less a demonstration of strength than an acknowledgement that its strategic options are narrowing. This only indicates the growing desperation of the hardliners in Tehran. Hezbollah has been severely degraded, Iran is steadily losing the strategic depth it once enjoyed in Syria, Iraqi militia networks are coming under increasing financial pressure, and the IRGC itself faces growing military, economic and diplomatic isolation. The Houthis remain Tehran's only proxy capable of directly threatening Saudi territory, disrupting Red Sea shipping and raising the economic costs of the conflict.
Iran's objective extends well beyond missile attacks on Saudi airports. By activating the Houthis after months of relative restraint, Tehran hopes to draw Saudi Arabia into a direct regional war, shifting attention away from mounting pressure on the IRGC and complicating the expanding American military campaign. A wider Arab-Iran confrontation would also ease pressure on Tehran by dispersing military and diplomatic attention across multiple theatres.
Saudi Arabia, however, has little reason to take that bait. Since the conflict began, Riyadh has consistently exercised strategic restraint while leaving the broader military campaign against Iran largely to the United States. The Kingdom's immediate strategic concern lies not in the Strait of Hormuz but at Bab el-Mandeb. Saudi Arabia's East-West Pipeline enables much of its crude to reach the Red Sea through Yanbu, reducing its dependence on Hormuz. By contrast, sustained Houthi disruption of Bab el-Mandeb would threaten Red Sea shipping, increase transport and insurance costs, affect exports from Yanbu and undermine Saudi Arabia's ambition to become a global logistics hub. Riyadh therefore has every incentive to concentrate on neutralising the Houthi threat rather than broadening the war through direct confrontation with Iran.
Pakistan also occupies a unique diplomatic position. It maintains working relationships with Saudi Arabia, Qatar, China and Iran, enabling it to support de-escalatory diplomacy while honouring its security commitments.
Pakistan's role should be viewed within this broader strategic framework. The Saudi-Pakistan Strategic Mutual Defence Agreement is intended not only to help protect the Kingdom against immediate threats from Iran and its regional proxies, but also to strengthen the Gulf's evolving security architecture. Rather than a wartime arrangement alone, it should be understood as an important pillar of the emerging R4 (Regional Four comprising Pakistan, Saudi Arabia, Qatar and Türkiye) security framework, designed to provide both immediate military cooperation and long-term strategic deterrence. Beyond the present crisis, Pakistan occupies a unique place in that architecture because of its experienced armed forces, strategic location and nuclear capability. As long as Riyadh confines its military response to neutralising the Houthi threat inside Yemen, however, Pakistan's contribution is likely to remain focused on intelligence sharing, military coordination, training, air defence and defensive preparedness.
The agreement also reflects a broader convergence of strategic interests among Saudi Arabia, Pakistan, Qatar and other Gulf partners. While Iran and the IRGC remain the immediate security challenge, Saudi Arabia and its Gulf and Arab allies also view Israel's expanding military reach and demonstrated willingness to employ force across the region as a longer-term strategic concern. The continued degradation of Hezbollah and the gradual rollback of Iranian influence in Syria and Iraq therefore serve a dual purpose: they weaken Tehran's regional proxy network while also reducing one of the principal justifications Israel has invoked for repeated military intervention in the Levant. In that broader strategic context, Pakistan's role extends beyond crisis management to reinforcing the Gulf's long-term deterrence posture and regional strategic balance.
That calculation would change only if the renewed conflict with the Houthis and Iran crossed a substantially higher threshold. Sustained attacks on Saudi territory, critical infrastructure or strategic maritime lifelines—particularly through Bab el-Mandeb and the Red Sea—would fundamentally alter the Kingdom's security requirements. Under those circumstances, Pakistan could provide air, naval and other military capabilities under the defence agreement. Even then, the initial operational priority would remain defending Saudi Arabia, restoring the security of Red Sea maritime routes and neutralising the Houthi threat rather than opening a separate Pakistani front against Iran.
Pakistan also occupies a unique diplomatic position. It maintains working relationships with Saudi Arabia, Qatar, China and Iran, enabling it to support de-escalatory diplomacy while honouring its security commitments. Alongside Doha, Islamabad is therefore likely to continue encouraging dialogue even as it prepares for contingencies should Saudi Arabia face direct external aggression.
Iran may have played its last major regional card. Whether it succeeds now depends less on the Houthis than on Saudi Arabia's willingness to abandon the strategic restraint that has defined its response throughout this conflict. If Riyadh refuses to take the bait, Tehran's attempt to widen the conflict through the Houthis is unlikely to alter the strategic balance of the war.