london british foreign office say summon north korean ambassador condemn wednesday ballistic missile test north korea say successfully test new intercontinental ballistic missile breakthrough put u.s. mainland within range nuclear weapons summon north korean ambassador foreign office make clear condemnation late ballistic missile test minister asia pacific mark field say statement north korea claim want bring security prosperity people action create insecurity deepen isolation say field britain permanent member u.n. security council late test high long north korean missile fly land sea near japan britain summon north korean ambassador missile test