Dramatically ramped up North Korean missile testing may pose a risk to passenger jets in the area, officials fear, as Pyongyang does not regularly give notice of its plans as required under international agreements.
원문출처 : http://www.cnn.com/2017/08/02/asia/north-korea-aviation-risks/index.html
원문출처 : http://www.cnn.com/2017/08/02/asia/north-korea-aviation-risks/index.html