Iran and six major powers wrapped up a third round of nuclear talks Wednesday with the parties saying a solution to the decade-old standoff remains possible by July but that the toughest work has barely begun. This week’s talks marked the halfway point in the five-month period Iran and the six powers fixed to seal a comprehensive nuclear agreement. A deal would aim to address all international concerns on Iran’s nuclear work in exchange for lifting the sanctions regime on Tehran. Iranian and Western officials said the next talks, which start May 13, would mark a transition from discussing key issues to the real drafting work—a crucial moment that may quickly reveal whether both sides are ready to make the tough political compromises a deal will require. The mood in Vienna was generally positive, with tentative signs of gaps narrowing on a few key issues. But the two sides […]