Axiom and Tessera signed a formal cooperative security and economic agreement today — the Meridian Concordat — binding both corponations to mutual defense obligations and joint infrastructure investment across the Circuit's western corridor, in what analysts are calling a direct structural response to Zheng-Dao's three-year territorial expansion along the eastern Spires. The pact, negotiated over eighteen months, establishes a joint command structure for territorial enforcement, shared access to Tessera's proprietary SNT communication infrastructure, and a 4.2 billion quanta co-investment in hardened commercial nodes that will functionally redraw the economic center of gravity in The Circuit. 'This is a marriage of convenience, not conviction,' said Meridian Wire analyst Kofi Brennan-Sato in a morning broadcast. 'Axiom and Tessera have spent twenty years litigating over data sovereignty. They're together now because Zheng-Dao's expansion makes the alternative worse.' Zheng-Dao's Chief Territorial Officer, Director Shen Okafor-Volkov, responded with a brief public statement: 'The Concordat is a reaction, not a strategy. We look forward to continued growth.' Palladian and Helix Biosystems both declined comment on whether they had been approached to join the agreement.