South Korean soldiers stand guard at the border village of Panmunjom between South and North Korea at the Demilitarized Zone (DMZ) on February 27, 2013 in South Korea. - 

Tensions are rising on the Korean Peninsula as North Korea blocks South Korean worker access to an industrial zone along the border of the two countries. The Kaesong Industrial Complex was the last functioning crossing between the North and the South.

The BBC's John Sudworth joins Marketplace Morning Report host Jeremy Hobson from Seoul, South Korea to discuss the economic importance of the industrial complex.