The war has upended the Gulf’s old security assumptions, forcing states to reconsider their reliance on the US and future ties with Iran. By Giorgio Cafiero · 28 September 2026 The US-Israeli war on Iran and its chaotic spillover effects across the Middle East and beyond have forced the Gulf Cooperation Council (GCC) members to come to terms with new realities. Calculations about the Gulf’s security architecture are being reassessed, and Gulf states have been seriously questioning longstanding assumptions about the United States’ commitment to their security in the face of regional threats, chiefly from Iran, which retaliated against US and Israeli attacks by firing missiles and drones at the GCC states since the outset of this conflict on 28 February. Looking ahead, what will emerge from this conflict is unclear. There will not be imminent reconciliation between Gulf Arab monarchies and Iran. Nor will the Gulf Arab monarchies make a straightforward move away from Washington. What appe...