[단독] 북한군 경기 연천 침투

http://imnews.imbc.com/replay/2017/nwdesk/article/4237106_21408.html

연천땅굴

http://bemil.chosun.com/nbrd/bbs/view.html?b_bbs_id=10038&pn=2&num=49869

북한의 전비상태

https://www.youtube.com/watch?v=s3uyFVS-IYw