Published Tuesday, Feb. 18, 2014 | 2:35 a.m.
Updated Tuesday, Feb. 18, 2014 | 2:35 a.m.
VIENNA (AP) — Iran and six world powers are back at the negotiating table eager to come to terms on a comprehensive nuclear deal but deeply divided on what it should look like.
The two sides began meeting Tuesday in attempts to build on a first-step accord that temporarily curbs Tehran's nuclear activities in exchange for some sanctions relief. Implemented in January, the first-step deal is in effect for six months and can be renewed.
The six seek to minimize concerns that Tehran could use a peaceful nuclear program to make weapons. The Islamic Republic denies wanting — or ever working on — nuclear weapons.