In two major agreements they have demarcated practically the entire length of their 4, 300-km border.

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Unlike Antarctica, which is governed by an international treaty, most of it is demarcated.

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Thailand claims, however, that the 1.8 square mile (4.6 sq. km) area around it was never fully demarcated.

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Allen, the coalition commander in Afghanistan, met Friday with army officers in Pakistan to reduce rising tension on the poorly demarcated border.

WSJ: Airstrike Ravages U.S.-Pakistan Ties

It does this through the promise of lifetime employment, through clearly demarcated promotion based on seniority, and through well-defined hierarchies of decision making.

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Before the fence was built, all that separated that stretch of Mexico from California was a single strand of cable that demarcated the international border.

NPR: San Diego Fence Provides Lessons in Border Control

Lanes were demarcated by whole punches of red and white paper.

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Inside, floors morph from wood to stone to tile, rooms are demarcated only by rattan-wrapped poles, and a staircase seems suspended by nothing more than plants.

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This was tiresome and expensive, so around the time the frontier was demarcated in 1893, the strategy changed, and the British began a concerted effort to buy off tribal elders, or maliks.

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In the six months since South Sudan's independence, there has also been fighting in areas along the loosely demarcated border - with both countries accusing the other of backing rebels operating in their territories.

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Heroes and villains are clearly demarcated.

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