I would agree for Rhodesia. They became much like an island with the outsiders making sure that the authoritarian Mugabe had the stage to enter so he could flush the whites from the farm so foodstuffs would evaporate and hyperinflation set in.

I almost wonder if racists in SA and Anglo nations set the stage for sanctions so Mugabe could rise so the blacks could starve. They knew the food supply was safer under direction of Rhodesian regime.