I still think we need a 2000 mile long minefield, with heaps of razor wire on each side, helicopter gunship patrols, and a “shoot to kill” policy for anyone found inside the wire.
Nothing says “Unwelcome” like a concertina wire obstacle, except maybe the bleaching bones between the first obstacle and the next...
I have seen with my own eyes video of a fence along South Africa’s border with Mozambique. It is made of concertina wire and at the flip of a switch it can be electrified with 10,000 volts.
So how come Nelson Mandela was allowed to have one and we aren’t?