India had signed a $5.43 billion deal with Russia in 2018 for five S-400 regiments. So far, three of them have been delivered and deployed along India’s borders with Pakistan and China.

S-400 ‘Sudarshan Chakra’ worked efficiently in India-Pakistan conflict, says Russian envoy; full S-400 delivery by 2026

Post the success of Russian-made S-400 in repelling aerial threats during the operation, discussions abut next-generation systems—especially the upcoming S-500 Prometheus have started. 

Operation Sindoor: How is Russia's S-500 different from the S-400 defence system?

Developed by Almaz-Antey, the system had been built to intercept not just advanced aerial threats including ballistic missiles, hypersonic projectiles, but even satellites in low Earth orbit.

Operation Sindoor: Why India could be interested in Russia's S-500 defence system? Know its power, range, strike capabilities and more

The S-400 is a powerful air defence system that India bought from Russia. It can detect, track, and destroy enemy aircraft, drones and missiles. India’s S-400 is like an invisible shield watching the skies and protecting the nation 24/7.

Operation Sindoor: How the S-400 defence system shields India from Pakistan’s missiles

The Indian Army and Air Force actively employed the Barak-8 surface-to-air missile system alongside S-400 Triumph systems, Akash missiles, and DRDO's anti-drone technologies to neutralise incoming threats.

Operation Sindoor: What is the 'Barak-8 Missile System' used by Indian Army to thwart Pakistan’s offensive

Operation Sindoor Pahalgam terror attack avenged: S-400 system ready for Pakistan. Deployable in five minutes Know about air defence. Trending | India News | South Asia

Ready in five minutes | Operation Sindoor: India's S-400 regiment aims for Pakistan... What you should know about air defence system

India recently put its S-400 air defence missile system, acquired from Russia, to test in a war-like scenario, and the results couldn't be more satisfying. In an exercise carried out by the Indian Air Force, the Sudarshan S-400 system 'shot down' 80 per cent of the 'enemy package'.

India's Sudarshan S-400 system 'shoots down' 80% 'enemies' in exercise, the rest forced to retreat

Indian and Russian officials will soon meet to discuss and decide about final delivery schedule for last two squadrons of Russian S-400 missile defence system. The Indian Air Force (IAF) has already operationalised three of these squadrons.

India, Russia to meet to discuss delivery of last S-400 missile defence system squadrons

Is China using the Taiwan playbook on India? Chinese fighter jets have come "too close" to the Indian border. India responded by scrambling its own jets. India also plans to deploy the S-400. Palki Sharma tells you more.

Gravitas: Chinese jets came "too close" to Indian borders

The US House of Representatives on Thursday passed a legislative amendment that approves an India-specific waiver for harsh CAATSA sanctions for its purchase of the S-400 missile defence system from Russia.

US House of Representatives approves an India-specific CAATSA waiver. Know all the details here

Amid the Ukraine war and sanctions, Russia has begun delivering the second squadron of S-400 advanced surface-to-air missile defence system to India, ahead of schedule, officials said.

Amid Ukraine war, Russia starts delivery of second S-400 missile system to India

The United States has once again voiced some serious concerns over India's purchase of the multi-billion dollar missile defense system from Russia. The United States has said that Russia selling the S-400 missile defense system to India has shined a spotlight on the destabilizing role that Moscow plays in the region.

US voices concerns over India's S-400 purchase from Russia

Russia has delivered to India all the contracted 70,000 AK-203 Kalashnikov assault rifles as envisaged under a contract signed late last summer between India and Kalashnikov.

Russia delivers all the contracted 70,000 AK-203 to India

With threat from China on its mind, India is looking to make the first unit of S-400 Triumf advanced surface-to-air missile defence system operational by this April.

Eye on China, India to make Russia-made S-400 missile defence system operational from April

India is looking to make the first unit of Russia-made S-400 missile defence system operational by this April. All the five units of the system will be deployed in strategic areas to ward off China threat, according to official sources. All these five units may become operational by next year.

India to make first unit of Russia-made S-400 missile defence system operational from April

With China in mind India has now begun work on deploying the S-400 triumph advanced surface-to-air missile defense system. With the first unit to be made operational in April, the S-400 system was bought from Russia at a cost of 5 billion dollar in October of 2018.

India: First S-400 unit to be ready by April, deployment keeping threats from China in mind

Russian Deputy Prime Minister Yury Borisov has indicated that India may be the first foreign buyer of its most advanced S-500 ‘Prometei’ anti-aircraft missile system.

India may become the first buyer of S-500 anti-aircraft missile system: Russian deputy PM Borisov

India and Russia signed a Rs 51 billion contract on Monday for the joint manufacturing of over 500,000 AK-203 assault rifles at a factory in Uttar Pradesh's Amethi region.

India, Russia sign pact for AK-203 rifles, renew military cooperation for 10-years 

India and Russia are set to finalise deals in defence, trade, space, technology, and energy, which are likely to be inked on Monday at the power-packed annual meeting of Prime Minister Narendra Modi and President Vladimir Putin.

AK-203 rifles to S-400 air defence system: What to expect from power-packed India-Russia summit

India and Russia are likely to sign 10 bilateral agreements during President Vladimir Putin’s visit to New Delhi on Monday evening. According to reports, these agreements will be in various fields like space, culture, science and technology, and defence, among others.

India-Russia to sign 10 agreements, including space and defence, during Putin's visit

Russia has begun delivering the S-400 missile defence system to India. The US can sanction India for the purchase. But Washington can't afford to take this step. Palki Sharma tells you why.

Gravitas: S-400: A new guardian for India's skies

According to Russia's state-owned news agency Sputnik, Russia has started delivering its S-400 surface to air missile systems to India. Deliveries are going as planned.

Russia starts supplying it's most advanced long ranges missile system to India

India is likely to induct the first batch of sophisticated Russia's S-400 missile defence systems by the end of this year — an air defence technology deemed as one of the best.

Explained: Russian S-400 air defence missile system. Why is US not happy over India's S-400 procurement?

India's External Affairs Minister Dr S Jaishankar has urged for "constant sensitivity" to the "interests of a crucial strategic partner" during his Moscow visit.

In Moscow, Indian Foreign Minister Dr S Jaishankar calls for 'consistent sensitivity' to the interests of partners 

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S-400 ‘Sudarshan Chakra’ worked efficiently in India-Pakistan conflict, says Russian envoy; full S-400 delivery by 2026