Then why did Russia start amassing troops and preparing for war months before these ceasefire violations even happened?
What's more plausible, that Russia has precognitive abilities, or that it was looking for an excuse?
And isn't attacking another country kind of counter to this whole 'peace talks' narrative you seem to be suggesting? Shouldn't Russia itself start with condemning the ceasefire violations, instead of entering Ukraine with their army?
No matter which way you try to slice it, Russia is an aggressor.
Edit:
Btw I would have no trouble believing that Russia (or Russian-aligned separatists) bombed a part of Ukraine to make Ukraine look bad and take over the territory. They're committing war crimes left and right, and this would not be the worst one.