It appears that steps are being taken to create such border zones.
And until 1975, Bulgarian authorities often hastily buried the bodies of victims in the border zones where they fell.
A closer look, however, reveals that it isn't just businesses inside economic border zones that are swapping out stock.
Some rebels occupy border zones and profit from smuggling everyday goods that are subject to high tariffs.
"The number of observer attempts to penetrate into military units, restricted areas or border zones has grown lately".
"More and more often, monitors feel the irresistible desire to penetrate border zones, closed nuclear sites, missile centres and so on," he said on Monday.
A group of pieces for jazz septet, by the guitarist and composer Mary Halvorson, explored the border zones between genres with a great deal more zest.
Yet the story never abandons the big medical themes: doctor and patient, illness and health are, after all, border zones in a state of permanent skirmish.
When the city was divided decades ago, large parts of Berlin's rivers, lakes and canals became unused border zones or half-forgotten industrial areas.
The two countries negotiated a treaty that would define their exploratory rights in border zones, but the United States Senate declined to ratify it in 1980.
Whether the men were arrested and imprisoned by the authorities or fell prey to the violence of the no man's land that exists in Iran's border zones is unclear.
