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Photo by: Jo Bo-hee

South Korean President Lee Myung-bak visits the South Korean Army soldiers at a military base near the demilitarized zone (DMZ) that separates the two Koreas since the Korean War, in Yanggu, north of Seoul, South Korea, Thursday, Dec. 23, 2010. South Korean fighter jets dropped bombs and tanks fired artillery Thursday as the military staged its largest air and ground firing drills of the year in a show of force a month after North Korea's deadly shelling of a front-line island. (AP Photo/ Jo Bo-hee, Yonhap)

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