Russia is banking on its advanced surface-to-air missile (SAM) systems, particularly the S-500 Prometheus, to counter Western weapons aiding Ukraine's defense.
Russia’s S-500 “Prometheus” air defense system can be linked back to 2010, shortly after its S-400 predecessor was introduced to service. Some say it was designed to attack F-22 and F-35 stealth fighters flown by the U.S. and NATO.