seoul north korean leader kim jong un host massive celebration congratulate nuclear scientists technicians steer country sixth large nuclear test week ago official news agency say sunday unite state ally brace another long-range missile launch time 69th anniversary north korea found saturday fresh provocations spot north hold numerous events mark holiday throughout last week south korean officials warn north could launch another intercontinental ballistic missile defiance u.n. sanction amid escalate standoff unite state washington tell u.n. security council friday call meet monday vote draft resolution establish additional sanction north korea missile nuclear program japanese defense minister itsunori onodera say vital put pressure north korea additional sanction include block slow fuel supply put firm pressure north korea realize develop missiles accept dialogue progress diplomatic efforts onodera tell public broadcaster nhk sunday unless firmly apply pressure north korea change direction kcna say kim throw banquet laud nuclear scientists top military party officials contribute nuclear bomb test last sunday top art performance photo session leader kcna specify banquet hold analysts say likely saturday photos release sunday kcna show young leader break broad smile people theater two prominent scientists ri hong sop head north korea nuclear weapons institute hong sing mu deputy director rule workers party korea munition industry department ri hong play vital roles north nuclear program appear close distance kim field inspections weapons test include late nuclear test ri former director yongbyon nuclear research center north korea main nuclear facility north pyongyang hong also work chief engineer north korea say late test advance hydrogen bomb independent confirmation western experts say enough strong evidence suggest reclusive state either develop hydrogen bomb get close kcna say sunday scientists technicians bring great auspicious event national history extra-large event perfect success test h-bomb kim praise developers remark take lead attain final goal complete state nuclear force line parallel pursuit nuclear economic development recent test h-bomb great victory korean people cost blood tighten belt arduous period kim quote say ri hong roles also note overseas prompt unite nations unite state south korea blacklist aside elite rank-and-file north koreans also commemorate anniversary saturday visit kumsusan palace sun house embalm body found father kim il sing son successor kim jong il kcna say service personnel civilians include children lay floral baskets bouquets statues decease leaders across country enjoy art performances dance party north korea 's kim jong un fete nuclear scientists hold celebration bash