The S-400 Triumf (NATO reporting name: SA-21 Growler) is a sophisticated air defense missile system developed by Russia's Almaz-Antey Air Defense Concern.

The S-400 boasts impressive engagement ranges. It can engage targets at ranges of up to 400 km (about 250 miles) and altitudes of up to 30 km (about 98,000 feet). This gives it the ability to intercept threats far beyond the range of many other air defense systems

The system features a multifunction radar, the 91N6E Big Bird, capable of detecting and tracking multiple airborne targets simultaneously. It can also provide fire control guidance for multiple missile launchers

The S-400 system uses different types of missiles for various engagement scenarios. The 40N6 missile has the longest range, while the 48N6 missile covers medium-range engagements

The S-400 is capable of engaging a wide range of targets, including fighter jets, bombers, cruise missiles, and even ballistic missiles

The S-400 system is highly mobile and can be rapidly deployed to different locations. It consists of various components, including launchers, radar systems, and command posts, mounted on wheeled vehicles for ease of transport

The S-400 can be integrated with other air defense systems, allowing for coordinated operations and better coverage

Russia has marketed the S-400 system to various countries, and its sales have garnered international attention and concerns

Russia has deployed S-400 systems to protect key military installations, important cities, and sensitive areas. These deployments reinforce Russia's air defense capabilities

The S-400 system has been a subject of controversy, particularly due to its export to countries that are also NATO members