Oil Falls as EU Adds Iran Sanctions Workaround Before G-20, OPEC

(Bloomberg) -- The U.S.-Iran standoff and shrinking American crude stockpiles propelled oil to its biggest monthly gain since January. Prices tumbled immediately before Friday’s close as traders closed positions and the EU said a workaround to Iran sanctions was in operation.Futures in New York tumbled on Friday amid weak U.S. manufacturing data and word that Europe had launched an attempted workaround to American sanctions on Iran. Still, prices gained 9.3% in June, with traders hoping fo