washington unite state aim impede european trade business transactions iran despite president donald trump decision last week decertify 2015 nuclear agreement secretary state rex tillerson tell wall street journal european union leaders brussels thursday highlight need protect company investors deal iran adverse effect washington reinstate sanction iran officials say president pretty clear intent interfere business deal europeans may way iran tillerson tell journal interview thursday say clearly fine guy want trump last week adopt harsh new approach iran refuse certify compliance nuclear deal strike unite state five power include britain france germany republican president give congress 60 days decide whether reimpose economic sanction iran lift pact exchange scale program west fear aim build nuclear bomb something tehran deny trump criticize nuclear accord bad deal ever vow withdraw congress european ally address problems tillerson comment appear aim reassure europeans washington try pressure avoid business iran work europeans six months tillerson say bring along think process mean necessarily agree entirely ... start formalize process policy adopt journal say tillerson would discuss multibillion-dollar deal reach boeing co ba.n 2015 accord boeing first major u.s. company announce major business venture iran last year agree sell dozens commercial plan tehran u.s. interfere eu trade iran tillerson