India is progressing with plans to procure an additional five S-400 Triumf air defence systems from Russia. Moscow has already presented a cost proposal, setting the stage for negotiations with New Delhi. The ultimate decision will be made by the Cabinet Committee on Security, contingent upon an agreeable price and clearance from the Finance Ministry. The current contract for five S-400 systems, signed in 2018 at a cost of $5.43 billion, is on track for completion with the final system slated for delivery in November 2026.
This new acquisition is poised to bolster India’s air defence capabilities significantly, particularly in the eastern region adjacent to China. The S-400 system demonstrated its operational effectiveness during India’s Operation Sindoor in May 2025, reinforcing the argument for expanding the fleet of these advanced defence systems. The enhancement of India’s air defence is viewed as a strategic necessity amid regional security concerns.
While India is advancing its S-400 arrangements, a decision has yet to be made about purchasing Russia’s Su-57 fifth-generation fighter aircraft. The Indian Air Force has shown interest in this Russian offer, especially considering China’s deployment of J-20 stealth fighters in Tibet, which presents a potential challenge to India’s aerial military capabilities.
These discussions on the S-400 acquisition are expected to play a significant role in the broader defence talks between India and Russia. Russian President Vladimir Putin’s upcoming visit to India for the BRICS summit in September is anticipated to further these conversations, highlighting the ongoing defence collaboration between the two nations.