50-year-old "Pechora" not retiring: India completely upgraded Soviet SAM system before Project Kusha's arrival
The old Soviet S-125 complex received a digital control system, an updated radar, and modern communication equipment
Kusha
Will a new system replace S-400 in India? DRDO unveils Kusha missile with a range of up to 400 km
New Delhi bets on its own technologies after years of cooperation with Moscow
India Wants to Abandon S-400 Due to Russia's Refusal to Grant Access to Source Code
New Delhi is Developing its Systems Modeled After Russian Air Defense Systems