North And South Korea Trade Shots

Published August 20, 2015 at 1:12 PM EDT

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In this photo provided by the South Korean Defense Ministry on August 10, 2015, South Korean soldiers patrol near the scene where planted landmines exploded on August 4, maiming two soldiers on border patrol in the demilitarized zone dividing North and South Korea, on August 9, 2015 in Paju, South Korea. South Korea has accused North Korea of planting the landmines, sending military tensions on the Korean peninsula soaring as it threatened to make Pyongyang pay a 'harsh price.' (South Korean Defense Ministry via Getty Images)

Rival neighbors South Korea and North Korea exchanged artillery shells today. There were no reports or injury or damage, but the incident is another sign of the tensions between the two countries. Here & Now security analyst Jim Walsh of MIT’s Security Studies Program discusses what’s going on with host Lisa Mullins.

Guest

Jim Walsh, security analyst with the MIT Security Studies Program. He tweets at @drjimwalshmit.