S-400 Triumf

Russia's flagship long-range air-defense system — a road-mobile, layered SAM built to engage aircraft, cruise and ballistic missiles out to 400 km, and the centerpiece of both its homeland shield and its arms-export diplomacy.

Overview

The S-400 Triumf, known in NATO parlance as the SA-21 Growler, is a long-range, mobile surface-to-air missile system fielded by the Russian Aerospace Forces and exported to a small set of partner states. A single battalion fuses a long-range acquisition radar, an engagement radar and several transporter-erector-launchers into one networked battery able to track many targets and engage dozens at once. It anchors the upper tier of Russia's integrated air defense and, increasingly, doubles as an instrument of diplomacy: a sale signals alignment with Moscow and has repeatedly strained buyers' relations with Washington.

Development

Almaz-Antey developed the S-400 as an evolution of the S-300P family through the 1990s, and the type formally entered service in 2007 with a first regiment deployed around Moscow, according to Military Machine and Deagel. The signature 40N6 very-long-range missile — the source of the headline 400 km figure — reached service far later, after a protracted test campaign.

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