Socialism

I normally criticise this (must make time to do the same with conservatism more often), but I was just reading something or other that referred to Mugabe as a socialist. I know that's what he calls himself, and I know there's a particularly unconvincing line of argument that sometimes comes from the left to the effect that the Soviet Union, say, was "right wing". I know that, but in the case of Mugabe, in fairness, in what sense, exactly, is he a socialist?

If he started describing himself as a duck, would we start calling him a duck?