Common Questions

What is the Decentralised Mosaic Defence doctrine?: Iran's military doctrine restructuring the IRGC into 31 autonomous provincial commands, each authorised to conduct strikes without central approval. Activated on Day 5 of the 2026 conflict as a counter to decapitation strikes that had killed senior commanders.Source: Lowdown
Why did IRGC ignore Pezeshkian's ceasefire order?: Provincial IRGC commanders under the mosaic defence doctrine hold independent launch authority. When Pezeshkian issued his Ceasefire order, units struck Dubai, Saudi oil facilities, and Bahrain within hours. Pezeshkian attributed it to 'miscommunication within the ranks.'Source: Lowdown
Did US strikes destroy Iran's missile capability?: US CENTCOM claimed 90% reduction in Ballistic missile attacks and 83% in drone launches after Week 1 strikes. Day 10 disproved the claim: 109 drones and 9 Ballistic Missiles struck UAE targets in a single day, a conflict record, showing capacity was dispersed not destroyed.Source: CENTCOM / Lowdown
How does Decentralised Mosaic Defence differ from normal IRGC command?: Standard IRGC operations require central authorisation from Tehran command. The mosaic doctrine devolves launch authority to 31 provincial commanders, removing the single point of failure that decapitation strikes target. It trades central coordination for survivability.Source: Lowdown
When did Iran activate the mosaic defence doctrine?: Day 5 of the 2026 Iran-Israel-US conflict, following decapitation strikes that killed senior IRGC commanders on 28 February 2026. Iran did not officially confirm the activation.Source: Lowdown

Background

The doctrine is a structural response to Iran's longstanding vulnerability to command-and-control decapitation. By devolving launch authority to provincial commanders, Tehran designed a force that could sustain offensive operations even after the destruction of central headquarters, communications infrastructure, and senior leadership.

Iran fully activated the Decentralised Mosaic Defence doctrine on Day 5 of the 2026 conflict, restructuring the Islamic Revolutionary Guard Corps (IRGC) into 31 autonomous provincial units, each authorised to launch strikes without central approval. The move followed decapitation strikes that killed senior IRGC commanders on 28 February. 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 the dispersal question definitively: 109 drones and 9 Ballistic Missiles struck UAE targets in a single day, a conflict record. The same doctrine that sustained offensive capacity made Ceasefire enforcement structurally impossible: when President Masoud Pezeshkian issued a Ceasefire order, provincial IRGC units ignored it within hours.

How the World Sees Them

Iran

Tehran treats the doctrine as a deterrence asset against decapitation: even the killing of senior commanders cannot halt operations. President Pezeshkian's failed ceasefire order exposed the doctrine's cost to civilian control.

Israel

Israeli analysts were first to identify the mosaic defence activation and flag the destroyed-versus-dispersed question. The Day 10 record vindicated their scepticism of Cooper's 90% reduction claim.

Gulf States

UAE and Bahrain bore the operational consequences: provincial IRGC units struck regional energy infrastructure and population centres despite a presidential order to halt, revealing the limits of Iranian diplomatic commitments.

United States

CENTCOM's strategy of targeting central IRGC command assumed decapitation would suppress fire. The doctrine directly refuted that assumption: Day 10's single-day record of 109 drones demonstrated dispersed capacity, not destroyed.