The correct answer is S-400 systems.
Key Points
The S-400 Triumf is an advanced air and missile defense system developed by Russia's Almaz-Antey Corporation, widely regarded as one of the most effective surface-to-air missile systems in the world.
India signed a deal with Russia in October 2018 to procure five units of the S-400 air defense systems under the framework of the India-Russia defense cooperation.
The S-400 is designed to intercept and destroy a variety of targets, including stealth aircraft, ballistic missiles, and drones, making it a crucial part of India’s air defense strategy.
The system can engage targets at a range of up to 400 kilometers and at altitudes of up to 30 kilometers, providing comprehensive protection against aerial threats.
During Pakistan's attempted strikes in May 2025, the S-400 played a pivotal role by successfully intercepting incoming drones and missiles, showcasing its advanced targeting and interception capabilities.
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