Tags
Austria, Balkans migration route, border controls, border fence, Brussels Belgium, Budapest Hungary, Dublin agreement, European Union (EU), express.co.uk, free movement, Germany, Hungary, illegal migration, migrant crisis, migrants, Monika Pallenberg, Nick Gutteridge, police dog teams, refugees, Schengen zone, Serbia, Slovenia, Sweden, Syria, troops, Turkey, Vienna Austria
GETTY
The 100km fence will run along the border with Hungary
GETTY
The number of migrants using the Balkans route has dropped off recently