CNN Erin Burnett OutFront April 12, 2013 03:31:00
Nowhere is the tension with north korea more evident than the so-called no-man's land that divides north and south korea, what they call the demilitarized zone, the dmz. tom foreman is here with a closer look. what do we know, first of all, about the dmz? >> the first thing that anyone needs to know, wolf, is there simply is no more heavily guarded border anywhere on the planet. 160 miles long, two and a half miles wide, the demilitarized zone is ironically bordered by hundreds of thousands of troops and heavy weapons. former president bill clinton called it the scariest place on earth. and da...