Yoon emphasizes defense against N. Korean undercover anti-state forces… ArirangNews 0 87 08.19 14:27 https://www.youtube.com/watch?v=-_o42ZypSnQ + 14 https://www.youtube.com/feeds/videos.xml?channel_id=UCzznO4xSV8BKnUBPy… + 13 Yoon emphasizes defense against N. Korean undercover anti-state forces as UFS starts