Iran  and six world powers sought on Tuesday to make headway toward resolving their decade-old nuclear dispute, with Western officials expressing hope the talks would not be further complicated by the  Ukraine  crisis. So far, diplomats said, there is little...

The co-pilot of a missing Malaysian jetliner spoke the last words heard from the cockpit, the airline's chief executive said on Monday, as investigators consider suicide by the captain or first officer as one possible explanation for the disappearance. No trace of Malaysia ...

Russian President Vladimir Putin signed a decree on Monday recognizing Ukraine's Crimea region as a “sovereign and independent country,” just hours after the strategic Black Sea peninsula declared it had broken away from Ukraine. The moves triggered the toughest Western sanctions...

    The new U.S. chief envoy for Syria on Monday pledged continued American backing for political opponents of Syrian President Bashar al-Assad as   the country’s conflict   moves into a fourth year. “Assad will go to any length to maintain...