Archive · 1 Sep 2026
India Weighs Five More Russian S-400 Squadrons After Operation Sindoor
Russia has offered to sell India five more S-400 air-defence units.
These systems use radar and missiles to find and stop aircraft and other threats.
India already has four units from an earlier agreement and expects a fifth one by November.
The new proposal could cost more than Rs 50,000 crore.
Indian officials say the S-400 helped protect the country during Operation Sindoor.
A retired Air Marshal said one system destroyed a Pakistani surveillance aircraft from 314 kilometres away.
The new units could be placed along India’s eastern and western borders.
The United States has objected to India’s S-400 purchases and could impose sanctions.
Some officials are also concerned that relying heavily on Russian technology could make spare parts and software updates harder to obtain.
Russia has offered India five additional S-400 Sudarshan air-defence squadrons in a proposal estimated at more than Rs 50,000 crore.
India has received four of five S-400 squadrons ordered under its 2018 agreement with Russia, with the final unit expected by November.
The S-400 can reportedly detect targets up to 600 kilometres away and engage them at ranges of up to 400 kilometres.
Indian officials and retired Air Marshal Jeetendra Mishra credited the system with intercepting Pakistani aircraft during Operation Sindoor, including a reported 314-kilometre engagement.
The proposed deployment on India’s eastern and western fronts could strengthen air defence but may increase sanctions, delivery-delay and Russian-technology dependence concerns.
- Who
- Russia and India are involved, with the systems intended for the Indian Air Force and wider Indian air-defence network.
- What
- Russia has offered five additional S-400 Triumf systems, known in Indian service as S-400 Sudarshan.
- When
- The proposal followed Operation Sindoor; deliveries under a new contract could begin about three years after signing, while the fifth unit from the 2018 order is expected by November.
- Where
- The additional systems are expected to support India’s eastern and western fronts.
- Why
- India is seeking to strengthen its layered air-defence network after the reported performance of the S-400 during Operation Sindoor.
Arguments Supporting Additional S-400s
Concerns About Additional S-400s
Air-defence capability
Arguments Supporting Additional S-400s
Indian officials and Air Marshal Jeetendra Mishra said the S-400 intercepted Pakistani aircraft and helped deter threats during Operation Sindoor.
Concerns About Additional S-400s
The reported operational claims come from Indian officials and military sources, while the broader network already includes systems such as Akash and air-defence guns.
Border protection
Arguments Supporting Additional S-400s
Five additional squadrons could strengthen India’s layered air-defence network along both its eastern and western fronts.
Concerns About Additional S-400s
The articles indicate that deliveries could take about three years after a contract is signed, potentially delaying the added capability.
Strategic and technological dependence
Arguments Supporting Additional S-400s
The purchase would continue India’s longstanding defence cooperation with Russia and expand the use of a system described as effective over a very large area.
Concerns About Additional S-400s
The United States has warned of sanctions, while reliance on Russian spare parts, replacement missiles and original-equipment-manufacturer software updates could raise long-term technology and logistics concerns.
- Estimated proposal value
- More than Rs 50,000 crore
- Additional systems offered
- Five S-400 squadrons
- Existing order
- Five squadrons under a 2018 India-Russia contract; four have been delivered
- Expected fifth unit
- Likely to be delivered by November
- Reported detection range
- Up to 600 kilometres
- Reported engagement range
- Up to 400 kilometres
- Reported Operation Sindoor engagement
- A Pakistan Air Force surveillance aircraft was reportedly destroyed at 314 kilometres
