Iran and six powers failed on Monday for a second time this year to resolve their 12-year stand-off over Tehran's nuclear ambitions, and gave themselves seven more months to clinch an historic deal.
U.S. Defense Secretary Chuck Hagel resigned on Monday, leaving under pressure as President Barack Obama faces critical national security challenges, including fighting Islamic State in Iraq and Syria and revising plans to exit Afghanistan.
A unit of Citigroup Inc must pay a $15 million fine for not adequately supervising communications among its equity research analysts, clients and the firm's sales and trading staff, Wall Street's industry funded regulator said on Monday.
New York City elected officials were meeting on Sunday to discuss community concerns following the shooting death of an unarmed man in Brooklyn by a police officer who said his weapon discharged accidentally, officials said.
