Decentralised Mosaic Defence

Decentralised Mosaic Defence is the structural answer to Iran's longstanding vulnerability to command-and-control decapitation. By devolving launch authority to provincial commanders, Tehran designed a force that can sustain offensive operations even after the destruction of central headquarters, communications infrastructure, and senior leadership. The doctrine reflects lessons from decades of US and Israeli targeting studies of Iranian command nodes.

Iran fully activated the doctrine on Day 5 of the 2026 conflict, restructuring the IRGC into 31 autonomous provincial units, each authorised to strike, mine, or interdict without central approval. When Admiral Brad Cooper reported ballistic-missile attacks were down 90%, Israeli analysts posed the key question: was the drop destroyed capacity, or dispersed-but-unfired? Day 10 answered it: 109 drones and 9 Ballistic Missiles struck UAE targets in a single day, a conflict record, while CENTCOM's claimed 90% suppression figure remained unchanged. The doctrine simultaneously made Ceasefire enforcement structurally impossible: when President Masoud Pezeshkian issued a halt order, provincial IRGC units continued firing within hours, demonstrating that political authority cannot reach the tactical edge.

The doctrine's relevance extends beyond the missile campaign. Mine-laying in the Strait of Hormuz is conducted under the same devolved authority. The two IRGC mine-laying boats CENTCOM destroyed at Bandar Abbas on 25 May 2026 were operating under provincial command during live Ceasefire negotiations, their crews unresponsive to any diplomatic signal Tehran may have wished to send. That episode confirmed the doctrine's persistence under Ceasefire conditions and made the Mosaic Defence the central obstacle to any verifiable halt agreement. The Majlis codification of the Hormuz toll into statute mirrors the doctrine's logic at the legislative level: authority is embedded in law, not in any individual's orders, so no decapitation strike can remove it.