unite nations russia urge hot head calm friday unite state admit felt challenge north korea warn could test hydrogen bomb pacific president donald trump kim jong un trade insult trump call north korean leader madman friday day kim dub mentally derange u.s. dotard would face high level hard-line countermeasure history retaliation trump say u.s. would totally destroy north korea threaten u.s. ally calm hot head russian foreign minister sergei lavrov tell reporters unite nations world leaders gather week annual u.n. general assembly continue strive reasonable emotional approach ... kindergarten fight children u.s. secretary state rex tillerson express hope interview abc sanction voice every corner world could lead north korea back talk admit intensify rhetoric leave washington quite challenge north korea foreign minister ri yong ho warn thursday kim could consider hydrogen bomb test unprecedented scale pacific ri due speak unite nations saturday add know kim exact thoughts response tillerson say u.s. diplomatic efforts would continue military options still table north korea six nuclear test date underground experts say atmospheric test would first since one china 1980 would proof success weapons program senior u.s. official speak condition anonymity say washington take kim threat seriously add atmospheric test would game-changer say question north korea technical capabilities washington give much credence pyongyang take action certain amount bluster take grant deal north korea official tell reuters pyongyang conduct sixth large nuclear test sept. launch dozens missiles year accelerate program aim enable target unite state nuclear-tipped missile lavrov friday push proposal moscow beijing dual suspension north korean weapons test u.s.-south korean military drill kick-start talk lavrov suggest neutral european country could mediate describe exchange insult u.s. north korean leaders quite bad unacceptable u.s. treasury gold price rise japanese yen strengthen friday exchange barb fuel geopolitical jitters drive investors assets consider safe time turmoil late round rhetoric begin tuesday trump first address unite nations make threat destroy north korea country 26 million people also call kim rocket man suicide mission remark ... convince rather frighten stop path choose correct one follow last kim say statement carry north official kcna news agency friday promise make trump pay dearly speech south korea say first direct statement kind north korean leader japan country suffer atomic attack call north korean threat conduct atmospheric test totally unacceptable trump friday tweet kim jong un north korea obviously madman mind starve kill people test like never before white house say friday trump south korean president moon jae-in agree seoul acquisition development highly advance military assets increase deployment u.s. strategic assets around south korea rotational basis name specific weapons systems thursday trump announce new u.s. sanction say allow target company institutions finance facilitate trade north korea ask diplomacy still possible say additional sanction pyongyang include ship trade network show trump give time economic pressure weigh north korea u.s. treasury secretary steven mnuchin say bank business north korea would allow operate unite state kcna also publish rare criticism official chinese media say comment north korea nuclear program damage tie suggest beijing neighbor major ally side washington kcna say chinese media openly resort interference internal affairs another country drive wedge two countries china foreign ministry spokesman lu kang say relevant side exercise restraint dedicate ease situation rather irritate other rhetoric start rattle countries french sport minister laura flessel say france team would travel 2018 winter olympic game south korea security could guarantee 2018 game stag pyeongchang 80 km 50 miles demilitarize zone north south korea world heavily arm border correct typographical error dual paragraph 12 u.s. challenge rise north korea tensions russia urge calm