Putin has stated since the early 2000s that he does not see Ukraine as a legitimate state, that it should be reunited under Muscowy, etc.
And this has been validated by Medvedev's recent statement
Putin not seeing Ukraine as a legitimate state does not, in no way, shape or form, infer that Russia wants the territory of Ukraine lock stock and barrel, other than the eastern regions, which Russia will likely keep/hold. But at any rate, the second largest country in Europe will indeed become smaller come the conclusion of this conflict.
But we can always look the coming bright future of Ukraine after they have defeated the Russians:
lulz.