Iran's 'Fourth Successor' Strategy: How Tehran Plans to Survive a Long War with US, Israel

• Iran's "Fourth Successor" is a multi-layered succession system ensuring political and military command continuity even if top leaders are eliminated.
• The strategy emerged after recent US-Israeli strikes killed senior Iranian figures, including Supreme Leader Ali Khamenei; his son Mojtaba Khamenei was reportedly wounded.
• It designates up to four replacements for every key leadership position, ensuring rapid transfer of authority to defeat "decapitation strikes."
• This system is integral to Iran's Mosaic Defense doctrine, which decentralizes military command, allowing units to operate autonomously.
• The "Fourth Successor" is a key component of Iran's "long war" strategy, aiming to withstand overwhelming conventional power and prolong conflict.