Zambia: The Hell Run

There is only one certainty about economic blockades: they bring out blockade busters. Britain's embargo on oil to Rhodesia is a case in point: it simply does not work. The reason, Britain charged last week, is that South Africa, despite strong British protests, is shuttling enough fuel into Rhodesia to keep the country running indefinitely. Rhodesians know how frustrated Britain feels.

Rhodesia has been equally ineffective in keeping oil from its black northern neighbor, Zambia, which until December had been totally dependent on Rhodesian Railways to haul its petroleum supplies from Mozambique...