Last year Austria only returned 39 people to Slovenia for crossing the border illegally. 

EU Court of Justice to be told that Croatia has violated treaty. 

Two-pronged strategy will use the Lisbon Treaty and charges of illegal fishing. 

But expresses support for EU expansion in Balkans. 

Slovenian police started fining Croatians on January 26. 

Croatia has "no legal grounds whatsoever" for the move. 

Fake explosives belt and knife found on Croatian coach. 

“Slovenia will insist on arbitration implementation” 

Two modified guns, 18 automatic weapons, a hunting rifle, 37 cartridges and 689 bullets found. 

Juncker says it concerns the whole EU.