I asked an Israeli friend of mine, and he said they build intelligent walls to detect crossing above/below
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Secret of a wall, is to monitor both sides. Lesson from Bastide towns in France.
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Great article. The Mexican government is not our friend. We need
@realDonaldTrump to get tough with them.Thanks. Twitter will use this to make your timeline better. UndoUndo
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that's why we need to be concerned about underground & not just the wall.
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