defector north korea caution underestimate kim jong un come nuclear weapons say president donald trump may key stop him.song byeok escape north 2002 currently reside south korea new interview tell independent threat nuclear war real long kim jong-un power think kim jong un could wage nuclear war power threaten need remove soon possible said.the 48-year-old defector use create propaganda art regime create protest work aolthese picture show inside pyongyang 360ft deep metro system double nuclear bunker war break north korea us.images show commuters use world deep underground train system include two line combine length 18 miles beneath north korea capital.construction work pyongyang metro start 1968 inaugurate 1973 kim il sing grandfather current dictator kim jong-un.watch fascinate look north korea photographer andrew mcleod usually busy commuters depth subway system mean citizens could also use shelter tensions north korea america boil full-scale war.the train old carriages germany buy north korea 1999 head scrap heap pyongyang claim train build north korea despite attempt conceal origin old graffiti tag see carriages.french photographer eric lafforgue capture image trip hermit state say 17 station two lines.he say fare equivalent half us cent validate ticket one automatic machine work day visit instead train attendant check check ticket hand.for entire story daily mail look inside north korea lavish underground nuclear bunker…is kim jong un unafraid nuclear conflict video