Topic: ukraine russia war/tactics
Context: Not yet checkable. The named systems are already in use at lower speeds — ISW records Banderol and S8000 in the September strike packages — but no 500-650 km/h figure has been independently measured.
Why this score? Ukrainian presidential adviser on defence technologies and the country's best-known independent radio/electronic-warfare specialist; his technical accounts of Russian drone hardware and control links are unusually specific, checkable and routinely relayed by ISW and specialist outlets. Discounted from higher because he is a serving official and an interested party on Ukraine's own air-defence performance.