Macedonia has begun building a new razor-wire fence parallel to an existing one on its border with Greece to make it harder for migrants to enter the Balkan country.

Since November only refugees from Syria, Afghanistan and Iraq have been allowed to cross the border on their journey to western Europe, but migrants from other countries have still tried to get across.

‘The idea is to send a message to migrants that there is a double fence so give up crossing illegally,’ a senior army official said.