Israeli border fences have so far excluded masses of migrants from Sudan, north Africa and Syria, but they are not cheap. Around 5m high, the face is covered with razor wire and fitted with touch-sensors, night vision cameras and movement and heat detectors which are monitored from sophisticated control rooms, together with other 'secret' detection technology that is not publickly known. They are supported by armed guards and mobile response teams. The cost to Hungary and Bulgaria will be not less than €1.5m per kilometer.
|Sudanese migrants gaze through Israeli fence|