A 21-year-old from Denmark poses for a photo as he sits on top of a Soviet-made anti-aircraft gun in May 2013 at a training camp inside Syria near Idlib and Aleppo.

Seventeen EU members including France, Germany, Britain and Belgium inked an international agreement Thursday designed to thwart the recruitment of “foreign terrorist fighters” who travel from Europe to conflict zones abroad, notably in Syria.

Drawn up by the 47-member Council of Europe, the new protocol amends existing provisions to outlaw a number of terrorism-related acts.

These include “travelling abroad for the purpose of terrorism,” “receiving training for terrorism” and “organizing or otherwise facilitating travelling abroad for the purpose of terrorism” — which explicitly includes providing funding to jihadist groups.

“Rarely has such a treaty received such unanimous support from the beginning,” Council of Europe chief Thorbjorn Jagland said at a signing ceremony in Latvian capital Riga.

“All of this shows our commitment to send a positive signal to all would-be terrorists: Europe is closing in, we are not waiting for you, we are coming for you,” he said.

The protocol had been put together in a record seven weeks because of the serious threat posed by foreign fighters joining the ranks of jihadists in Syria and Iraq, Jagland told assembled officials.

The agreement must now be ratified by individual national parliaments.

The move comes as U.N. experts said this week that the Islamic State group is paying supporters up to $10,000 (8,800 euros) for each person that they recruit to fight in war-ravaged Syria and Iraq.

The U.N. experts learnt from Belgian contacts that 500 foreign fighters in Iraq and Syria came from Belgium, the highest per capita of any EU country.