washington/beijing white house say monday seek reassure china president-elect donald trump phone call taiwan leader last week obama administration warn could undermine progress relations beijing statement spokesman u.s. president barack obama highlight concern potential fallout trump unusual call taiwan president tsai ing-wen friday prompt diplomatic protest beijing saturday white house spokesman josh earnest say senior national security council officials speak twice chinese officials weekend reassure washington commitment one china policy reiterate clarify continue commitment unite state longstanding china policy policy place 40 years focus promote preserve peace stability strait separate china taiwan u.s. interest earnest say president-elect team different aim leave describe say chinese government beijing place enormous priority situation sensitive matter progress make relationship china could undermine issue flare say call taipei first u.s. president-elect president taiwan leader since president jimmy carter switch diplomatic recognition china taiwan 1979 acknowledge taiwan part one china china regard taiwan renegade province despite tensions matter range trade china pursuit territorial claim south china sea obama administration highlight cooperation global issue climate change iran north korea nuclear program early monday china foreign ministry say trump clear china position taiwan issue china maintain contact team vice president-elect mike pence seek play telephone conversation say sunday courtesy call intend show shift u.s. policy china senate foreign relations committee chairman bob corker mention possible secretary state trump administration say monday think reaction taiwan call overblown get call take get call everyone think probably lot read case really corker say chinese foreign ministry spokesman lu kang would say directly china lodge stern representations trump call repeat weekend statement go relevant side unite state whole world know chinese government position taiwan issue think president-elect trump team also clear lu tell daily news brief fact china maintain contact communication team president-elect trump add repeat previous assertion although give detail lu also say would speculate prompt call describe matter taiwan important sensitive question china unite state former u.s. secretary state henry kissinger white house national security adviser president richard nixon make historic visit china 1972 tell forum new york u.s.-china relations impress calm reaction chinese leadership trump call kissinger meet trump last month say suggest beijing may look develop calm dialogue new u.s. administration trump vow campaign label china currency manipulator issue tough rhetoric sunday china ask us ok devalue currency make hard company compete heavily tax products go country u.s. tax build massive military complex middle south china sea think trump say twitter china currently view currency manipulator either treasury department international monetary fund world trade organization say chinese tariff import goods generally high u.s. tariff china taiwan philippines vietnam malaysia brunei claim part energy-rich south china sea trillions dollars trade pass annually lu would draw directly comment trump tweet defend china-u.s. relationship china-u.s. economic trade relationship many years always highly mutually beneficial one otherwise develop way today say diplomatic contretemps one several recently republican president-elect real estate magnate never hold public office foreign affairs military experience trump take office jan. 20 still consider choice secretary state global time influential tabloid publish rule communist party official people daily say editorial tuesday china would meet trump reckless remark head-on trump china-bashing tweet cover real intent treat china fat lamb cut piece meat paper say u.s. seek reassure beijing trump call taiwan leader