LONDON— Iran and Russia are negotiating an oil-for-goods swap that would let Iran lift oil exports substantially, in defiance of the Western sanctions that helped force Tehran in November to agree a preliminary deal to end its nuclear program. Three Russian and Iranian sources close to the negotiations said final details were in discussion for a barter deal that would see Moscow buy up to 500,000 barrels a day of Iranian oil in exchange for Russian equipment and goods. “Good progress is being made at the moment with strong chances of success,” said a Russian source. “We are discussing the details and the date of signing a deal depends on those details.” It is not clear whether the deal would be implemented before the details of November's nuclear agreement in Geneva between Iran and six world powers. – Reuters