But Western officials say that the impact of any European measures is likely to be modest and that Tehran’s decision to stay in the pact after U.S. sanctions fully kick in on Nov. 5, may hang on the willingness of the oil exporter’s biggest non-European clients to keep buying crude. If Tehran can foresee weathering U.S. pressure until 2020, European thinking goes, American voters might elect a new president who could reverse course. Related Video Your browser does not support HTML5 video. 0:00 / 0:00 Skip Ad in 15 Iran reached a historic agreement with major world powers over its nuclear program in 2015. Under the deal, what did Iran give up and how is it benefiting? WSJ’s Niki Blasina explains. For most European companies, keeping a hand in Iran’s $400 billion economy at the risk of losing access to the $20 trillion U.S. economy and being cut off […]