Pakistan, Saudi Arabia and Turkiye have formally named their mutual-defence pact the Mecca Defence Alliance after senior officials met in Istanbul. The agreement, signed in Mecca on August 7, states that an attack on any one member will be treated as an attack on all three. A Strategic Political and Defence Committee has begun translating that political commitment into operational arrangements, with discussions covering military interoperability, joint exercises, defence-industrial cooperation, joint production and research, and counterterrorism coordination. A permanent secretariat has been established in Riyadh, and Turkish Foreign Minister Hakan Fidan said its first secretary general will be appointed from Pakistan. The pact remains open to other countries, but its institutional structure and the circumstances for invoking mutual defence have not been settled. Bangladesh has publicly expressed interest, while Egypt is weighing legal and constitutional issues. The initiative is developing amid renewed US-Iran military exchanges, regional security tensions and uncertainty over the Strait of Hormuz, with prediction-market pricing previously placing the probability of normal traffic through the waterway by December 31 at 28.5% YES.