washington president donald trump pressure chinese president xi jinping talk next week take tough measure north korea unite state compile information possible new sanction chinese bank work pyongyang senior administration officials say trump try convince xi meet beijing squeeze north korea step limit oil export coal import financial transactions late attempt trump china north korea major ally rein pyongyang nuclear weapons ambition far clear xi consolidate power communist party congress agree china say leverage pyongyang exaggerate point support u.n. security council recent sanction north korea evidence try curtail isolate nation nuclear missile test north korea year conduct powerful nuclear test detonation test-fired intercontinental ballistic missiles perfect could reach u.s. mainland trump vow prevent north korea gain capability two u.s. officials say threat additional u.n. economic sanction north korea another option solicit great cooperation china play beijing concern deep poverty north korea could prompt exodus refugees across border officials say unite state ally collect detail information chinese bank transactions north korea try identify institutions egregious record business pyongyang objective officials say craft proposal escalate sanction chinese financial entities stop short sanction people bank china central bank washington far mostly hold new sanction chinese bank company business north korea give fear retaliation beijing possibly far-reaching effect world economy brief statement thursday formally announce visit chinese end country foreign ministry say china ready work unite state achieve important result trump visit elaborate trump stop beijing part nov. 3-14 tour five asian nations north korea major focus visit include u.s. ally japan south korea watch increase worry unite state north korea exchange bellicose rhetoric prepare trip trump meet former u.s. secretary state henry kissinger key player president richard nixon open china 1972. lunch last week white house trump ask singapore prime minister lee hsien loong opinion north korea unpredictable leader participant say lee tell kim see nuclear weapons program essential survival u.s.-led ouster iraqi president saddam hussein libyan leader muammar gaddhafi downfall lee say probably impossible kim become convince unite state want overthrow participant lunch say super-paranoid part u.s. strategy north korea deprive kim jong un government resources trump leave open threat military force u.s. officials emphasize want diplomatic solution highlight military preparedness counter north korean threat three u.s. aircraft carrier group region trump threaten totally destroy north korea deride kim rocket man suicide mission dismay u.s. military intelligence officials fear rhetoric could backfire well pressure china unite state quietly pursue direct diplomacy north korea use new york channel get contact diplomats pyongyang unite nations mission analysts asia skeptical trump pressure china work think china seriously change exist policy north korea simply pressure unite state say zhao tong north korea expert carnegie-tsinghua center beijing china ambassador unite state cui tiankai tell reporters monday take broad effort pressure north korea china alone solve problem china everything korean issue say japan threat pyongyang hit close home test year two ballistic missiles fly territory concern tokyo trump administration lack clear north korea strategy big worry trump grand asia policy north korea policy well define ... respond circumstances instead ... say toshihiro nayakama professor keio university turn china exert pressure question extent chinese pressure believe yet evaluate u.s. administration say trump administration consider threaten china trade action resistance north korea advisers outside administration urge trump pursue course persuade advisers warn trade war u.s. officials say meet trump push reluctant xi rein north korea