The White House said on Monday it was concerned about a recent report that Iran and Russia are negotiating an oil-for-goods swap worth $1.5 billion a month, a deal a spokeswoman said could trigger U.S. sanctions. Such a deal would significantly boost Iran’s oil exports, which have been slashed by more than half to about 1 million barrels a day by U.S. and European economic sanctions aimed at forcing Iran to accept curbs to its nuclear program. Russian and Iranian sources close to the barter negotiations said the deal could see Russia buy as much as 500,000 barrels a day of Iranian oil in exchange for Russian equipment and goods. “We are concerned about these reports and Secretary (of State John) Kerry directly expressed this concern with (Russian) Foreign Minister (Sergei) Lavrov today,” Caitlin Hayden, spokeswoman for the White […]