I think everyone is misunderstanding this mud wall. I have seen the thing sometime ago. Its a stop-gap arrangement by Security Forces over there. Your government is not paying money nor agree to barbed-wire the AF-PAK border. That project is also costly and no where will take more then 5 years to complete. It will include installing electric poles with powerful lights for the night, security check post at every other kilometer. A small road at our side, where border guards could move in light vehicles for petrol.
The problem is AF-PAK border is poorly demarcated. Its easier to just pull up a bulldozer and raised a 7-8 feet high ditch-cum-band there. This will serve some purposes:
1. Marked the border and hence for future upgrading to proper sealed border will lay a ground work.
2. It will stop any kind of vehicle crossing over.
3. Security personals have a higher ground where they can watch relatively further and also in case of border clash will have a cover too.
I am trying to find out the video if got it will post it for you. Then i hope you all will understand that this is not simply a mud-wall. It pretty well serve the purpose at very lesser cost.