washington/seoul image release north korea thursday appear show succeed develop missile capable deliver nuclear weapon anywhere unite state could two three test away declare combat ready u.s.-based experts say thursday north korea release dozens photos video wednesday launch new hwasong-15 missile leader kim jong un declare country finally realize great historic cause complete state nuclear force u.s.-based experts skeptical past north korean claim put unite state range say data late test photos appear confirm north korea missile sufficient power deliver nuclear warhead anywhere america experts u.s. officials say question remain whether re-entry vehicle capable protect nuclear warhead speed toward target accuracy guidance systems analysis washington-based 38 north think tank missile expert michael elleman international institute strategic study say north korean photos show missile considerably large predecessor initial calculations indicate new missile could deliver moderately size nuclear weapon city u.s. mainland elleman say elleman say missile large powerful enough carry simple decoy countermeasures challenge u.s. missile defenses handful additional flight test need validate hwasong-15 performance reliability likely establish efficacy protection system need ensure warhead survive rigors atmospheric re-entry elleman write two three test might need north korea could accept low confidence missile reliability another missile expert whose employer allow speak publicly media agree elleman assessment north korea make high demand reliability accuracy missile ... two three test would suffice long north korea hit u.s. cities thermonuclear warheads probably need ability hit every city target target specific aim point within cities convince u.s. leadership war north korea would expensive contemplate call u.s. president donald trump thursday south korean president moon jae-in say missile north korea advance far unclear pyongyang technology miniaturize nuclear warhead still need prove things include re-entry technology u.s. base experts say north korea almost certainly develop warhead light enough carry hwasong- 15 elleman say capable deliver 1,000 kg payload jeffrey lewis middlebury institute strategic study say twitter hwasong-15 big warhead need miniaturize wednesday u.s. defense secretary jim mattis acknowledge missile go high previous test part north korean effort continue build ballistic missiles threaten everywhere world basically north korea say missile soar altitude 4,475 km 2,780 miles 10 time height international space station fly 950 km 590 miles 53-minute flight land sea near japan missile large size immediately apparent photos analysts say allow powerful propulsion system big missile say michael duitsman research associate centre nonproliferation study mean big north korea countries produce missiles size north korea join club u.s. experts officials say missile still appear power liquid fuel something make vulnerable could take two hours fuel on-site launch early one u.s. official tell reuters missile could power solid fuel experts say north korea could still years away able field versatile solid-fueled icbm photos appear show missile least two large nozzles first stage instead one large several small nozzles hwasong-14 first stage seem use essentially case hwasong-14 two engines say david wright union concern scientists u.s.-based nonprofit science advocacy group second stage look like carry twice much propellant combination two things mean really new capable missile photos show mobile erector vehicle use position missile upright see photos launch u.s. intelligence analysts conclude test missile fire fix position mobile launcher three u.s. officials say massive vehicle 100 percent domestic product north korea state media quote kim jong un say western analysts say likely truck one half dozen vehicles obtain years ago china north korea modify since graphic rocket science click tmsnrt.rs/2j2s5t3 graphic north korea 's missile nuclear test click tmsnrt.rs/2vxbj0s north korea image suggest missile capable hit america u.s. experts