Translate the following English sentence to French:
"We must all ratify this, for the only means of combating the vicious circle of revenge and people' s taking the law into their own hands is to have war criminals brought to justice and sentenced."
Nous devons tous ratifier cette convention, car le seul moyen permettant d'éviter le cercle vicieux de la vengeance et de l'autojustice consiste à traduire les criminels de guerre devant les tribunaux et à les juger.