India is reportedly set to purchase 300 Russian missiles to replenish its S-400 air defence systems. The deal comes as New Delhi prepares for a meeting between Prime Minister Narendra Modi and Russian President Vladimir Putin on December 5, where India may also seek five S-400 squadrons, according to media reports.

The S-400 systems were previously used in Operation Sindoor, and the proposed missile purchase aims to strengthen India’s air defence capabilities.

In addition to the S-400 missile systems, India is reportedly evaluating the acquisition of two to three squadrons of Russia’s Sukhoi-57 fifth-generation fighter jets. Moscow is promoting the Sukhoi-57 as an alternative to the American F-35 Lightning II, top sources told the Times of India.

A source said:
"There is a case for IAF to induct two to three squadrons of fifth-generation fighters as a stopgap measure till the indigenous stealth AMCA (advanced medium combat aircraft) becomes ready for induction by 2035 or so. But no decision has been made on the Sukhoi-57, F-35 or any other choice."

Besides the S-400, the Indian armed forces are also assessing the Russian Pantsir missile system. This system is seen as a potential tool to counter armed and kamikaze drones, adding another layer to India’s air defence network.

The S-400, called “Sudarshan Chakra” in India, is a long-range surface-to-air missile system made by Russia’s Almaz-Antey. Its name, inspired by Lord Vishnu’s legendary weapon from the Mahabharata, reflects its precision, speed, and lethal accuracy.

The system can engage a variety of aerial threats, including aircraft, drones, and ballistic missiles at ranges up to 400 km and detect targets as far as 600 km, making it one of the most advanced air defence systems in the world.