Rumors that a deal on Iran’s nuclear activities could be signed within 72 hours sent oil prices lower on Thursday morning after Brent and WTI had hit nine and 11-year highs, respectively, in earlier trade. “I have received definitive news that within the next 72 hours the nuclear deal will be signed in Vienna. Even if it might take a couple of days more or so, what appears to be certain is that the deal will be reached. #Iran’s #oil is returning to the market under golden circumstances,” Iranian energy journalist Reza Zandi tweeted on Thursday....