---
title: "S-400 Triumf Deal (India-Russia): Facts & CAATSA"
description: "The S-400 Triumf deal is a $5.43 billion 2018 contract between India and Russia for five missile regiments, crucial for defense policy discussions."
url: "https://modeldiplomat.com/learn/glossary/s-400-triumf-deal"
---

[New](https://modeldiplomat.com/)

#

Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The S-400 Triumf deal is a 2018 India-Russia contract for five regiments of a long-range surface-to-air missile system valued at roughly US$5.
- 43 billion.
- Why did India not face CAATSA sanctions over the S-400 deal like Turkey did?
- How did India structure payments to avoid US dollar-clearing exposure?
- How many S-400 regiments did India buy and what is each capable of?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

The S-400 Triumf deal is a 2018 India-Russia contract for five regiments of a long-range surface-to-air missile system valued at roughly US$5.43 billion.

Go beyond the definition

## Research S-400 Triumf Deal (India-Russia) like a delegate

Model Diplomat's AI drafts position papers, speeches, and country research with real sources — built for MUN and politics students.

## Research it like a delegate

Research on modeldiplomat.com

## Ask a follow-up about S-400 Triumf Deal (India-Russia)

Open a cited briefing in Model Diplomat search — timelines, positions, and sources you can use in committee or exam answers.

[Start research on S-400 Triumf Deal (India-Russia)](https://modeldiplomat.com/search?q=Explain%20S-400%20Triumf%20Deal%20\(India-Russia\)%20%E2%80%94%20key%20dates%2C%20actors%2C%20positions%2C%20and%20sources)

Example

India and Russia signed the US$5.43 billion S-400 Triumf contract in New Delhi on 5 October 2018 during the summit between Prime Minister Narendra Modi and President Vladimir Putin.

Keep learning

## Go deeper than the definition

[Explore all Civil Service & Diplomatic Exams lessons](https://modeldiplomat.com/learn/civil-services)[Test yourself with a quiz](https://modeldiplomat.com/learn/glossary/quiz/civil-services)

## Take S-400 Triumf Deal (India-Russia) beyond the glossary

Ask the AI research engine built for diplomacy — get briefings, position papers, and speeches with sources you can cite in committee.