… the refusal of Ukraine to implement the provisions of Minsk 2 ….
What Russia did in response would be in Russia’s statement. But here the writer is reporting that Ukraine refused to implement Minsk II.
If your link is only a translation of the agreement, it won’t say anything about who violated it, so I’m unsure what good it does to comb through it. I don’t see how the clauses are relevant without a factual chronology from after it’s signing, such as the one in my link. I’ll note that I’m happy to be presented with contrary evidence but also note that the source I provided is from Yale university—hardly a pro-Russian outlet.