U.S. and South Korean forces conducted a joint landing operation drill on the eastern coast of South Korea Monday. The drill is part of the two countries' annual military training exercise, code-named Foal Eagle.
North Korea, which sees such exercises as threatening, fired more than 500 shells Monday after Kim Jong Un's regime announced it would be conducting military drills of its own. Around 100 of these landed in water near the disputed sea border off the peninsula's western coast, which prompted the South to return fire.
KIM HONG-JI / Reuters
Amphibious assault vehicles of the South Korean Marine Corps throw smoke bombs as they prepare to land on shore during a U.S.-South Korea joint landing operation drill in Pohang on March 31, 2014.
Chung Sung-Jun / Getty Images
U.S. Marines from 3rd Marine Expeditionary Force, Battalion landing team deployed from Okinawa, Japan, participate in the joint landing operation at Pohang seashore.
JUNG YEON-JE / AFP - Getty Images
South Korean Marine amphibious assault vehicles land on the seashore in Pohang.
First published March 31 2014, 5:52 AM