Police, politicians and intelligence officials are meeting to discuss how to improve coordination in the fight against extremist violence and crack down on foreigners traveling to fight in conflict-torn countries like Syria and Iraq.

Dutch Foreign Minister Bert Koenders, who is chairing Monday's meeting at European Union police organization Europol, says countries and crime fighters have to build trust so that they can work together far more closely.

Koenders says, "It is essential that our way of working matches much better that of the foreign terrorist fighters."

The meeting of more than 50 countries from the EU and nations hit hard by extremists including Somalia and Nigeria comes in the aftermath of deadly attacks in Paris and the crippling effect of fears of further violence in the Belgian capital, Brussels.