ndia’s Agni missile programme has evolved from a Cold War-era technology demonstrator into the backbone of the country’s strategic nuclear deterrence architecture. This explainer traces the journey of the Agni series from its origins under A. P. J. Abdul Kalam and the Integrated Guided Missile Development Programme to the latest discussions around the proposed Agni-VI missile. The video explains how ballistic missiles work, the evolution from Agni-I to Agni-V, and why speculation around a possible 10,000-km-plus intercontinental-range missile is strategically significant. It also examines India’s changing security priorities amid China’s rapidly expanding missile capabilities, the importance of survivable nuclear deterrence, and how the Agni programme became central to India’s long-term strategic posture.