More than 13,000 American and South Korean military personnel are taking part in the Key Resolve drill.
ການຊ້ອມລົບລະຫວ່າງ ສະຫະລັດກັບເກົາຫລີໃຕ້
![South Korean Army soldiers patrol along a barbed-wire fence near the border village of Panmunjom in Paju, South Korea, March 11, 2013.](https://gdb.voanews.com/8cb2fa69-7bc1-4d9e-af6d-0d837720ab1a_w1024_q10_s.jpg)
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South Korean Army soldiers patrol along a barbed-wire fence near the border village of Panmunjom in Paju, South Korea, March 11, 2013.
![South Korean Army soldiers work on their K-9 self-propelled artillery vehicles during an exercise near the border village of Panmunjom in Paju, South Korea, March 11, 2013.](https://gdb.voanews.com/64add1dc-a444-47a8-a18a-ff9851469b4c_w1024_q10_s.jpg)
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South Korean Army soldiers work on their K-9 self-propelled artillery vehicles during an exercise near the border village of Panmunjom in Paju, South Korea, March 11, 2013.
![South Korean Army soldiers patrol along a barbed-wire fence near the border village of Panmunjom in Paju, South Korea, March 11, 2013.](https://gdb.voanews.com/ecfc8215-d5c6-434d-8ca9-5808be9afc46_w1024_q10_s.jpg)
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South Korean Army soldiers patrol along a barbed-wire fence near the border village of Panmunjom in Paju, South Korea, March 11, 2013.
![South Korean protesters shout slogans during a rally denouncing the annual joint military exercises between South Korea and the United States, near the U.S. Embassy in Seoul, South Korea, March 11, 2013.](https://gdb.voanews.com/e5cef54d-8160-4b5d-958d-f82b8088eb1d_w1024_q10_s.jpg)
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South Korean protesters shout slogans during a rally denouncing the annual joint military exercises between South Korea and the United States, near the U.S. Embassy in Seoul, South Korea, March 11, 2013.