Troops from the United States and South Korea began a joint military exercise Monday. As many as 80,000 troops are taking part in the yearly exercise, which is aimed at preparing for a military invasion from the North.
On Monday, South Korean President Park Geun-hye called for strong military readiness on the Korean Peninsula.
The exercise takes place as tensions between South and North Korea are high. Two South Korean soldiers were recently seriously injured when landmines exploded as they were patrolling the area between the two countries. The South blamed North Korea for placing the mines in the ground.
South Korea responded to the landmine explosions on Saturday by restarting broadcasts on speakers aimed at the North, near the border. This is the first time South Korea has done that in more than 10 years.
