@HistoPol Perhaps more is to come with the 1/n but in flight an IRMBs and ICMBs are not distinguishable. So in terms of an object in flight the assessment of risk is the same.
I cannot see any reason why an ICBM cannot contain a smaller warhead - that's all we are talking about. The only distiquishing feature of this new missile is its range. There are many missile capable of being tactical nukes.
RF has subs which can go anywhere and strike anything that matters.
As far as super power - that was the USSR. RF has the economy of a US state and a dramatically failing one at that. Yes, it has nukes but that does not make it a super power.