The main difference would seem to be range. This is still a ballistic missile, launched into space, able to carry nuclear warheads. and I assume this was to m

The main difference would seem to be range. This is still a ballistic missile, launched into space, able to carry nuclear warheads. and I assume this was to make sure that it was not misinterpreted as a nuclear attack: "US official says it was 'pre-notified' by Moscow about strike"