Soldiers from South Korea (L) and the US (R) gesture as they set up a floating bridge during a US-South Korea joint river crossing exercise in the border county of Yeoncheon, northeast of Seoul, on December 10, 2015. The Korean peninsula is the world's last Cold War frontier as Stalinst North Korea and pro-Western South Korea have been technically at war since the 1950-53 Korean War. (Photo by AFP Photo/Yonhap)
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