In September 2026 the Foreign Office confirmed that the Strategic Mutual Defence Agreement with Riyadh was in what state?

Explanation: The Foreign Office confirmed on 18 September 2026 that the Strategic Mutual Defence Agreement with Riyadh was operational and that some Pakistani forces had already been deployed, while terming the situation around the Red Sea chokepoint exceptionally serious. The spokesperson added that operational confidentiality required discretion. Pakistan had earlier deployed troops, fighter jets and air-defence systems to the Kingdom. CSS aspirants should treat this as a live case study in alliance commitments and expeditionary deployment.