moscow russia china call restraint north korea monday u.s. president donald trump warn weekend one thing work deal pyongyang hint military action mind ask russia make trump comment kremlin spokesman dmitry peskov tell conference call reporters moscow call continue call party involve conflict anything issue exercise restraint avoid step would worsen situation comment trump statement unite state might withdraw nuclear deal iran peskov say move would negative consequences speak beijing chinese foreign ministry spokeswoman hua chunying reiterate call party involve standoff north korea exercise restraint describe situation extremely complex serious china hop side nothing irritate worsen problem speak act cautiously tell daily news brief recent weeks north korea launch two missiles japan conduct sixth nuclear test defiance u.n. security council resolutions may fast advance toward goal develop nuclear-tipped missile capable hit u.s. mainland trump repeatedly make clear distaste dialogue north korea last week dismiss idea talk waste time day secretary state rex tillerson say washington maintain open line communication north korean leader kim jong un government country unsuccessfully deal north korea 25 years give billions dollars get nothing policy work u.s. president say twitter post monday trump comment seem suggest military action mind saturday trump make similar comment twitter negotiations fail 25 years say one thing work north korea russia china call restraint trump comment north korea