If what Robert Mugabe is doing in Zimbabwe were being done by Israelis or white South Africans fifteen years ago the world would be apoplectic with rage. As it is, the corrupt and flaccid United Nations can scarcely muster enough enthusiasm to admonish him to play nice.
The man should be deposed. No sanctions, no diplomacy, no niceties. Some nation, preferably African, but not necessarily so, needs to go into Zimbabwe and remove him from power. He's no better than Idi Amin or any one of the other psychopaths, idiots, and buffoons who've managed to rise to power in black Africa, and there is no point in trying to remediate him.
One way or another, for the sake of Zimbabwe and Zimbabweans, Mugabe has to go.