[[China]], [[Russia]] and [[Iran]] have developed this technology. The Russian [[Kinzhal]] (''Dagger'') is the most famous combat tested hypersonic missile. In the [[United States]], former SpaceX employees founded Castelion, which is a for-[[profit]] [[private-sector]] company attempting to develop this advanced [[technology]].<ref>https://techcrunch.com/2025/07/03/castelion-raises-350m-series-b-to-scale-hypersonic-missile-business/</ref> | [[China]], [[Russia]] and [[Iran]] have developed this technology. The Russian [[Kinzhal]] (''Dagger'') is the most famous combat tested hypersonic missile. In the [[United States]], former SpaceX employees founded Castelion, which is a for-[[profit]] [[private-sector]] company attempting to develop this advanced [[technology]].<ref>https://techcrunch.com/2025/07/03/castelion-raises-350m-series-b-to-scale-hypersonic-missile-business/</ref> |