When Saudi Crown Prince Mohammed bin Salman, Turkish President Recep Tayyip Erdogan, and Pakistani Prime Minister Shehbaz Sharif signed the Mecca defence agreement, they executed a structural overhaul of the Middle East’s security architecture. The pact codifies a defence commitment, where an armed attack on one is treated as an assault on all. Building upon September’s Saudi-Pakistan defence agreement, this tripartite arrangement bridges the financial capital of the Gulf, the...