How: By force (as opposed to achieving a peaceful resolution through adhering to the Minsk agreements which admittedly was just a ploy on Ukraine's side to buy

How: By force (as opposed to achieving a peaceful resolution through adhering to the Minsk agreements which admittedly was just a ploy on Ukraine's side to buy time to build up for an offensive) When: OSCE reports show increased activity in the area (the majority of it on the Donbass side of the neutral zone) during the two weeks leading up to the invasion. From that perspective it looks like it was in the process of happening when Russia stepped in. By whom: The Ukrainian regime (feels a bit weird to even have to answer this question).