however, in my view, complete containment can only be achieved by the construction of a wall around the capital, an impassable wall made out of concrete slabs, and, I would say, about eight meters high, using, of course, the system of electronic sensors already in existence and backed up by as many barbed-wire fences as are judged to be necessary, I am firmly convinced that no one would manage to get past that, not even, I would say, a fly, if you’ll allow me my little joke, but not so much because flies couldn’t get through it, as because, as far as one can judge from their normal behavior,
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