"South Korean army soldiers patrol along the barbed-wire fence in Paju, South Korea, near the border with North Korea Monday, Dec. 25, 2017. North Korea on Sunday called the latest U.N. sanctions to target the country ""an act of war"" that violates its sovereignty, and said it is a ""pipe dream"" for the United States to think it will give up its nuclear weapons. (AP Photo/Ahn Young-joon)"
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