Obama administration reiterates need for Assad to go hours after Kerry said the Syrian president's departure is not necessary.
Karzai ready to sign partnership agreement allowing US to keep nine bases in Afghanistan post 2014.
The newest trend in New York: dance filled lunch breaks.
Investigator's seek answers from Boston marathon bomber's six months in Russia.
'Pimp of the Pike' gets 10 years.
Watch: This is not how a parachute is supposed to work.