Isn't Kinzhal just the Iskander ballistic missile fired from a fighter/interceptor?
This is just like the Israeli Sparrow target missile launched from aircraft. They asked, if we can launch a simulated ballistic missile from an aircraft to simulate a real ballistic missile, why don't we do that with the real thing? Launch a real ballistic missile from an aircraft and give it a new name RAMPAGE and pretend it's an innovation.
Another one of those cases where Israelis consisting largely of Russians/Eastern Europeans and Russians share the same weapons ancestry.