WHO chief: Syria solution urgent

Margaret Chan, director-general of the World Health Organization, said it's urgent to find a solution to the four-year-long Syrian crisis soon, as it is now "imposing a heavy burden" on humanitarian efforts.

Chan said in Kuwait on Tuesday that the conflict, since its beginning in 2011, is "truly the biggest crisis ever recorded in the humanitarian world".

She spoke on the sidelines of the third International Humanitarian Pledging Conference for Syria.