Will Putin use nuclear weapons?

Around 2 weeks ago Putin made a statement about using every tool available to "protect Russia", which many, probably correctly, interpreted as nuclear blackmail. He also added that it's not a bluff.Based on what I read and heard on various podcasts (as one gets his/her information today), I think Vladimir lied (no shit) and it is a bluff. Using nuclear weapons would be ineffective militarily and a...