washington china ambassador washington say monday u.s. president donald trump state visit beijing next week historic opportunity boost cooperation world two large economies warn attempt contain beijing cui tiankai also stress urgency efforts find negotiate solution crisis north korea nuclear missile program warn dangerous situation tensions unite state pyongyang continue cui seek play differences china massive trade surplus unite state say beijing look ways cut confident significant outcomes trump nov. 8-9 visit trade economic front speak senior u.s. officials include secretary state rex tillerson outline asia-pacific strategy involve great cooperation japan india australia face china rise cui say relationships see zero-sum game expense another county think really serve interest countries aim sort contain china ... think anybody would able contain china say cui say washington try interfere regional efforts resolve dispute south china sea vital strategic waterway china claim contest several asian countries maybe would good u.s. let regional countries ... find way way manage situation cui ask call friday senior u.s. state department official revival four-way dialogue unite state japan india australia deepen security cooperation coordinate alternatives regional infrastructure finance predatory chinese options think attempt form exclusive club region ... would help anybody say people say things china might look mirror ... might describe despite cautionary word cui say sure summit trump chinese president xi jinping would successful follow first meet florida april historic opportunity say cui reiterate china call washington return talk stress beijing willingness step pressure pyongyang u.n. sanction ready take cost make great efforts security council resolutions say china warn attempt contain beijing trump visit