Group: Oil tanker tied to US-traded firm receiving Iran oil

Read MoreAn advocacy group alleges that an oil tanker owned by a major U.S.-traded transportation company appears to be taking on Iranian crude oil in a key Asian maritime strait in violation of American sanctionsAn advocacy group alleges that an oil tanker owned by a major U.S.-traded transportation company appears to be taking on Iranian crude oil in a key Asian maritime strait in violation of American sanctions