As Iran nuclear talks resume, U.S. hopes for a deal rise

Last week's round of indirect nuclear talks between the U.S. and Iran in Vienna was the first in which progress was made on both negotiating tracks, sanctions relief and nuclear measures, U.S. officials say.

Breaking it down: The working group focusing on sanctions relief required of the U.S. to return to compliance with the 2015 nuclear deal had made steady progress in the first three rounds. But the other, focusing on the nuclear measures required of Iran, stalled due to Iran's hardline positions and the question of what happens to Iran's...