'Most tense place on the planet'

A barren road takes us to the heavily fortified border between North and South Korea.

Most visitors see it from the South Korean side, however we're on the North Korean side looking south.

Our guide, Junior Lt. Colonel Nam Dong Ho, calls it "the most tense place on the planet."

He's one of North Korea's standing army of more than one million soldiers. Nearly three-quarters of them are stationed close to the Demilitarized Zone, also known as the DMZ.

Some stand here, at the DMZ, just feet from the border, armed and stony-faced; poised to respond to anything deemed a threat.

Their counterparts on the South Korean side do the same.