The S-400 Triumf is a Russian long-and mid-range anti-aircraft missile system designed to hit attack and reconnaissance aircraft (including aerial vehicles based on stealth technology) and any other air targets under conditions of intensive enemy fire and electronic countermeasures. As of January 2018, contracts for S-400 deliveries were inked with China and Turkey. In addition, negotiations to sell the systems to Saudi Arabia are underway. The first regimental set of S-400 systems was delivered to China.
Guardian of the sky: Russia's advanced S-400 air defense system
The first regimental set of S-400 systems was delivered to China
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S-400 Triumf air defense missile system seen during testing in Saint Petersburg
© AP Photo/Dmitry Lovetsky S-400 Triumf is a Russian long-and mid-range anti-aircraft missile system designed to hit attack and reconnaissance aircraft and any other air targets under conditions of intensive enemy fire and electronic countermeasures
© Sergei Malgavko/TASS S-400 missile systems of the Russian Southern Military District's missile regiment on combat duty
© Sergei Malgavko/TASS S-400 missile systems has been in service with the Russian Armed Forces since 2007
© Vitaly Nevar/TASS A training exercise by the Russian Baltic Fleet's air defence units involving S-400 Triumf air defence missile systems
© Vitaly Nevar/TASS S-400 has been described, as of 2017, as "one of the best air-defence systems currently made"
© Vitaly Nevar/TASS S-400 long-range air defense missile systems deployed at Hmeymim air base in Syria
© Vadim Savitsky/Russian Defense Ministry Press Service via AP Soldiers of the Russian Baltic Fleet's air defence unit during a training exercise involving S-400 Triumf missile systems
© Vitaly Nevar/TASS Soldier salutes near an S-400 Triumph missile system deployed at a military unit in the town of Elektrostal, Moscow region
© Marina Lystseva/TASS In April 2018, the first regimental set of S-400 Triumf long-range anti-aircraft missile systems was delivered to China
© Stanislav Krasilnikov/TASS