VIDEO: 'Immense queue' at Croatia border

BBC reporter John Sweeney is on the refugee trail searching for a young Syrian boy, Azam.

When they met last month in Serbia, Azam had a broken jaw and had been sent to hospital for treatment. Then he vanished.

As part of the search for Newsnight, Sweeney passed the Serbia-Croatia border, where he filmed the vast numbers of people waiting to cross over.

http://www.bbc.co.uk/news/world-europe-34630767#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa