washington rex tillerson arrive bonn wednesday maiden foreign trip u.s. secretary state attend summit g20 top economies time many wonder far president donald trump america first message reshape u.s. foreign policy north korean provocations report russia deploy new cruise missile concern china action south china sea conflict yemen syria ukraine shortage global challenge tillerson make remark arrival bonn senior u.s. officials say tillerson two-day trip mostly listen g20 counterparts say concede might frustrate tillerson also participate series sessions shift global order cooperation africa conflict prevention prelude g20 leaders summit hamburg germany july trump due attend think mostly go listen tour say u.s. official speak condition anonymity say may disappoint u.s. ally guy say well listen go dispirit u.s. ally worry trump unpredictability wonder far go warn china iran behavior whether back long-standing treaties trade deal tear nuclear agreement iran build border wall mexico cozy moscow tillerson former exxon mobil ceo international business experience none government state department officials say would meet counterparts britain saudi arabia turkey italy oman bonn participate large meet yemen syria also hold first meet secretary state russian foreign minister sergei lavrov time trump administration contact moscow spotlight resignation national security adviser michael flynn flynn new administration main contact many foreign ambassadors unite state conversation mr. lavrov important one senior state department official say speak reporters ahead tillerson departure meet lavrov thursday tillerson seek pragmatic constructive cooperation areas interest overlap official say obvious ones discuss many time counter-isis counterterrorism would areas secretary would hope develop possible avenues cooperation official say also press russia fully implement minsk peace accord end violence eastern ukraine g20 make develop economies emerge nations china india indonesia mexico south africa brazil jim wilkinson senior adviser former secretary state condoleezza rice say vital tillerson establish relationship fellow minister first trip chemistry counterparts begin first trip say secretary tillerson counterparts work tough issue around world go require trust tillerson job two weeks may immerse subject yet wilkinson say foreign minister understand early days may answer want know conduit someone speak u.s. tillerson arrive bonn amid question u.s. foreign policy