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UNSPECIFIED, NORTH KOREA - AUGUST 24: A soldier watches the train at a small railway station on August 24, 2015 in Pyongyang, North Korea. North and South Korea today came to an agreement to ease tensions following an exchange of artillery fire at the demilitarized border last week. (Photo by Xiaolu Chu/Getty Images)

UNSPECIFIED, NORTH KOREA - AUGUST 24:  A soldier watches the train at a small railway station on August 24, 2015 in Pyongyang, North Korea.  North and South Korea today came to an agreement to ease tensions following an exchange of artillery fire at the demilitarized border last week.  (Photo by Xiaolu Chu/Getty Images)