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Syria crisis: 'Disaster on this scale requires all hands on board'

6 September 2013 Last updated at 13:32 BST

The President of the World Bank has urged the world to unite in order to combat the "humanitarian disaster" in Syria.

Dr Jim Yong Kim was speaking in St Petersburg, where world leaders are meeting at the G20 summit.

He told the BBC's Jon Sopel that the refugee situation was "disastrous", and required "all hands on board".

"As a medical doctor, I've seen the pictures; I've seen the medical data. It really is appalling," he said.