The positive outcome of "Minsk-2" was the relatively decreased intensity of fighting along the firing line. Our people keep dying, but nevertheless, the West had the time to recover and gather resources, which allowed to pull together NATO's forces, i.e. achieve those results, on which Putin did not count. Putin wanted to destroy NATO and got it on his porch instead.
Yet Minsk agreements are not a legal document, as they were not ratified by anyone, and it is doubtful that their legal status obliges anyone to do anything. Moreover, in the framework of these agreements, Russia is both the director and a peacekeeper in the conflict, anyone but the aggressor. This demonstrates that the international community is not ready to respond to this type of aggression, especially when a permanent member of the UN Security Council is the aggressor.
The situation highlights the weakness of the global and regional security systems, as well as the need for corresponding reforms.