washington longest-serving u.s. diplomat warn isolationism protectionism russian aggression friday retirement speech implicitly criticize u.s. president donald trump policies even urge officials serve white house loyally ambassador dan fry argue since become world power century ago unite state largely pursue open rules-based world reject spheres influence great power bully neighbor contribute long period general peace west since roman time track record suggest open rules-based world unite west core asset great achievement foundation former assistant secretary state european eurasian affairs say wrap nearly 40-year career u.s. state department yet argue actually liability value luxury hobbesian darwinian world simply take share large possible add comment implicit rebuke america first approach trump pledge end see decades nations freeload u.s. security exploit trade agreements harmful u.s. workers speech fry note improbable victory cold war appear 1980s hail free swathe europe include poland serve u.s. ambassador soviet domination great achievement assault russia say present generation defend time come extend freedom europe fry skeptic russian intentions colleagues describe pragmatist lead efforts work russia white house aide bill clinton fall berlin wall late serve george w. bush late member generation experience hand leave u.s. diplomatic rank recent months like fry retire voluntarily others trump choose retain many current former u.s. officials trouble trump openness close tie russia fear could lead acquiescence annexation crimea ukraine broadly russian domination neighbor free trade advocate also worry trump decision abandon 12-nation trans pacific partnership trade deal desire renegotiate north american free trade agreement suggestion could impose punitive tariff fry argue winner-take-all attitude great power try carve world advantage spheres influence ... would mean acquiescence great power start russia china dominate neighbor force fear create close economic empires say america would essentially retreat whole areas east asia central asia eastern europe appear another implicit criticism current administration whose efforts clamp immigration seven muslim-majority nations refugee admissions stymie court fry say ethno-state identity root share blood retire diplomat also urge current officials serve trump new secretary state rex tillerson loyalty dedication courage help secretary tillerson deserve need help president well put back it among speak event former deputy secretary state tony blinken take dig long take trump fill state department job include secretary state john kerry use say deputy truly irreplaceable think flattery blinken say know add loud laughter u.s. diplomat warn isolationism implicit trump rebuke