Pakistan’s Saudi Defence Pact Faces Its First Wartime Test

The Strategic Mutual Defence Agreement (SMDA) between Pakistan and Saudi Arabia – signed six months ago on the principle that aggression against either country would be treated as aggression against both – is now being tested by the Iran war.

Pakistani Foreign Minister Ishaq Dar has publicly invoked the pact in conversations with Tehran. Field Marshal Asim Munir has made an emergency visit to Riyadh. Saudi analysts are openly discussing a Pakistani nuclear umbrella. The question is what the SMDA actually requires Pakistan to do, and whether Islamabad’s response will determine how seriously the Gulf takes its commitments for a generation.

The Pact and Its Origins

The SMDA was signed on 17 September 2025 at Al Yamamah Palace in Riyadh by Crown Prince Mohammed bin Salman and Prime Minister Shehbaz Sharif. Its core clause states that any aggression against either country shall be considered an aggression against both – wording modelled on collective defence principles comparable to NATO’s Article 5, though analysts have cautioned against interpreting it as an automatic trigger for military intervention.

The agreement was motivated in part by Israel’s 9 September 2025 airstrikes on Hamas officials in Doha, Qatar. The Financial Times reported that the strikes deeply unsettled Gulf states’ confidence in US security guarantees, and the SMDA followed weeks later as a direct response.

The Belfer Center for Science and International Affairs assessed the SMDA as serving to “signal unity and deter common threats” rather than creating an automatic military commitment. Joshua White of Brookings told the Financial Times: “You can’t have deterrence without some constructive ambiguity.”