India is in negotiations with Russia for additional S-400 surface-to-air missile systems following the successful deployment of the existing units during Operation Sindoor, which showcased their capabilities against Pakistani aerial threats. The Indian Air Force is keen on acquiring two more S-400 squadrons by 2029-2030, while also exploring the advanced S-500 system amid ongoing domestic defense projects like Project Kusha. These developments underscore India’s commitment to enhancing its air defense amid challenges from Pakistan and China, and emphasize the strategic defense partnership with Russia, despite pressures from the U.S. to limit such acquisitions.