Russia is reportedly backing Iran’s possible entry into a Saudi-Pakistan-Turkey security arrangement, raising questions about the emergence of a new regional defence bloc. The proposed framework, described as an “Islamic NATO” by some commentators, could bring Iran closer to Saudi Arabia, Pakistan and Turkey despite longstanding rivalries. Moscow’s reported support for Tehran’s participation adds another layer to the shifting Middle East power balance. If Iran joins the emerging Mecca Defence Pact, the move could reshape security cooperation across the Gulf and complicate calculations for Israel and the United States. Could this alliance mark a major new geopolitical shift?