By JOHN HEILPRIN and JAMEY KEATEN Associated Press
Iran nuclear talks entered a delicate phase Thursday as negotiators tried to fine-tune a draft agreement that would limit Tehran's atomic program in return for easing some sanctions. Iran's ability to produce nuclear fuel and relief for Iran's oil and banking sectors appeared to be among the sticking points.
Renewed opposition from influential members of the U.S. Congress to any deal they feel gives the Iranians too much for too little complicated the diplomatic maneuvering. The Democratic-led Senate signaled Thursday it would only give President Barack Obama until next month before pressing ahead with new Iran sanctions, and a key Republican introduced legislation to limit the president's future negotiating ability with Tehran.