India, Sept. 21 -- The Strategic Mutual Defence Agreement signed between Saudi Arabia and Pakistan on September 17, 2025, marks a significant turning point in West Asian geopolitics, formalising a decades-long strategic alignment and creating new ripples that could alter regional security architectures and challenge India's strategic positioning. This unprecedented pact establishes a Nato-style mutual defence commitment, declaring that "any aggression against either country shall be considered an aggression against both". While building upon nearly eight decades of deep-seated bilateral cooperation, this provision legally obligates mutual support in the event of an attack, encompassing joint military responses, enhanced intelligence shari...