Translate the following English sentence to French:
"It calls for the development, in close co-operation with countries of origin and transit, of information campaigns on the actual possibilities for legal immigration, and for the prevention of all forms of trafficking in human beings."
Le Conseil est déterminé à combattre à sa source l'immigration clandestine, notamment en s'attaquant à ceux qui se livrent à la traite des êtres humains.