India should reassess resilience of its air defence systems purchased from Russia: U.K. weapons and military expert

RUSI has published a paper (on December 12, 2025) saying, “Russia’s international customers for air defences should reassess the resilience of these systems to attacks, including cyberattacks, technical compromise and disruption of resupply in supply chains”. What specifically does this mean for the S-400 which India has acquired?  If we focus on S-400, the first…

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