VIENNA - World powers and Iran struggled on Saturday to overcome crucial differences that are preventing them from ending a 12-year standoff over Tehran's atomic ambitions, raising the prospect of another extension to the high-stake talks. | Video
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TOULOUSE France - Protesters clashed with police in southern France on Saturday over the death of a young activist killed by a police grenade, in the latest of a series of demonstrations which have embarrassed the Socialist government.
BUFFALO - As temperatures near Buffalo, New York, rose above freezing on Saturday, volunteers fanned out to help their neighbors clear the walls of snow that have paralyzed parts of the region this week, but the warming trend also raised the threat of flooding.
SEATTLE - A South Dakota man shot and killed three people and critically wounded a fourth person before taking his own life at a residence on a Native American reservation, law enforcement officials said Saturday.
ISTANBUL - U.S. Vice President Joe Biden said he and Turkish President Tayyip Erdogan he had discussed a transition of power in Syria away from President Bashar al-Assad during a four-hour meeting in Istanbul on Saturday.