photo - A visitor uses binoculars to see the North Korea side from the unification observatory in Paju, South Korea, Thursday, Aug. 17, 2017. The top U.S. military officer says a military solution to the North Korean missile threat would be "horrific" but allowing Pyongyang to develop the capability to launch a nuclear attack on the United States is "unimaginable." (AP Photo/Lee Jin-man)
A visitor uses binoculars to see the North Korea side from the unification observatory in Paju, South Korea, Thursday, Aug. 17, 2017. The top U.S. military officer says a military solution to the North Korean missile threat would be "horrific" but allowing Pyongyang to develop the capability to launch a nuclear attack on the United States is "unimaginable." (AP Photo/Lee Jin-man) 
A visitor uses binoculars to see the North Korea side from the unification observatory in Paju, South Korea, Thursday, Aug. 17, 2017. The top U.S. military officer says a military solution to the North Korean missile threat would be "horrific" but allowing Pyongyang to develop the capability to launch a nuclear attack on the United States is "unimaginable." (AP Photo/Lee Jin-man)
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