Someone, somewhere will believe this and a few of them may be Ukrainians.
I saw an outline from someone in some vid a while ago about what Russia wants:
The canal to Crimea unblocked(I think everyone is aware of this)
Land bridge to Crimea(this too)
To control the gas field to the west of Slovansk. Now this I had not heard of before, it is old news but in 2010 it was discovered and it has been suggested that Russia wants to control it so it does not threaten their own economy.
This last bit suddenly makes the war have a lot more sense and I have not seen it mentioned nearly as often as the former points.