This morning’s episode of CNN Student News features a report from the Demilitarized Zone (DMZ) of the Korean Peninsula. It’s an interesting look at the nuances of international boundaries, particularly boundaries between enemy countries. The report shows us how a few feet means the difference between legally and illegally being in North Korea.

To learn about the history of the conflict between North and South Korea, take a look at the The Korean “War” For Dummies produced by Keith Hughes.