CNN Anderson Cooper 360 August 18, 2015 01:19:00
Korea. this is 160 miles long. it is about 2 miles wide in some places. and it is the most heavily guarded military border in the world. and yet even here, sometimes people manage to sneak across or dash across from the north to the south. seeking asylum. and several decades ago, there were tunnels dug by the north, beneath it. bottom line is, anderson, even in much more limited scale. and very heavily guarded. building a barricade, building a wall as much as people want to think it means security it just doesn't. people find a way to get through. >> thank you very much. tom foreman. if the na...