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According to a late August Reuters article, Russia has deployed hypersonic missiles at least 3 times in Ukraine: https://www.reuters.com/world/europe/russia-sa

• 988747 4y ago
  Still counts as "research", just this time in actual war conditions.
• scottLobster 4y ago
  Research includes live fire tests. Russia has the advantage of an actual warzone with actual air defenses to test in. That or they're running out of missiles and down to pushing research prototypes into service (which given their use or Iranian drones and other supply woes would not surprise me).
• chipsa 4y ago
  Strongly suspect that Kinzhal is just a relatively bog-standard air launched ballistic missile running in a depressed trajectory, and much of the talk is just bloviating. There's no US equivalent, because we decided to cancel it (See AGM-48 Skybolt, and later AGM-69 SRAM and AGM-131 SRAM II).