I remember listening to Robbie Noel about 10 years ago tell about Rhodesia on his shortwave program. If it wouldn't be setting such a dangerous precedent, the UN could make itself useful in Zimbabwe (for a change).
Carolyn
Annan won't act, nor will Obasanjo or Mbeki.
That is because Mugabe is the eminence gris of the southern African revolutionary old-boy network.
Note that the first official act of the new AU was to suspend Madagascar for having ousted its president, while at the same time treating Mugabe as an honoured member and ignoring his atrocities.