Translate the following English sentence to French:
"So, the underlying causes have to be tackled, and without delay; I believe the accent must be placed on controls, on sporting sanctions and on action against the supply chains."
Donc, il faut s'attaquer aux causes profondes, mais sans attendre, je pense qu'il faut accentuer les contrôles, les sanctions sportives et l'action contre les filières.