The S-400 Triumf, deployed by India as a cornerstone of its air defence network, is one of the world’s most advanced and versatile surface-to- air missile (SAM) systems . Manohar Parrikar’s 2016 intervention strengthened India's air defence , saving Rs 49,300 crore. S-400 Triumf air defence system , dubbed the 'Sudarshan Chakra', proved its worth in 2025. An overview of the advanced S-400 defence system including its range, speed, price capabilities, deployment, operators and significance for regional security. Explore the S-400 Triumf—Russia's advanced air defense system with 400 km range, multi-target tracking, and rapid deployment capability.