beijing china express serious concern monday u.s. president-elect donald trump say unite state necessarily stick long-held stance taiwan part one china call basis relations trump comment fox news sunday question nearly four decades u.s. policy come prompt diplomatic protest china decision accept telephone call taiwan president tsai ing-wen dec. 2. china foreign ministry say cooperation question washington could recognize beijing core interest taiwan indicate would reject effort trump use issue bargain chip long list commercial security problems face two countries china note report express serious concern want stress taiwan issue concern china sovereignty territorial integrity involve china core interest say ministry spokesman geng shuang uphold one china principle political basis develop china-u.s. tie basis interfere damage healthy development china-u.s. relations bilateral cooperation important areas question geng tell daily news brief separate statement ministry cite foreign minister wang yi warn trip switzerland move damage one china principle ask reporter trump call tsai china pay close attention developments wang say clearly say matter whether tsai ing-wen authority person world force try damage one china principle harm china core interest end lift rock drop feet despite china discontent reach trump spokesman geng say china top diplomat yang jiechi outrank foreign minister meet trump advisers include pick national security adviser retire army lieutenant general michael flynn transit new york way latin america recent days side exchange view china-u.s. tie important issue concern geng say without elaborate give precise date meet unclear occur trump late remark taiwan beijing consider renegade province geng urge incoming trump administration fully recognize sensitivity taiwan issue uphold one china policy avoid broad picture china-u.s. tie seriously interfere damage china-u.s. relationship global strategic significance concern happiness countries people concern peace stability development prosperity asia pacific region internationally trump plan nominate long-standing friend beijing iowa governor terry branstad next u.s. ambassador china also consider john bolton former bush administration official urge tough line beijing job u.s. state department accord source familiar matter wall street journal article last january bolton say next u.s. president take bold step halt china military aggressiveness south east china seas say washington consider use diplomatic ladder escalation could start receive taiwanese diplomats officially state department lead restore full diplomatic recognition china warn trump ignore taiwan interest