Poten says US ban on Russian oil would have ‘fairly limited’ effect on tankers 7 March 2022 Researcher Erik Broekhuizen argues there is already an effective ban on importsAuthor: Capt. Johnhttps://www.tradewindsnews.com/tankers/poten-says-us-ban-on-russian-oil-would-have-fairly-limited-effect-on-tankers/2-1-1180024