Translate the following English sentence to French:
"But there is a common factor, a hard core, comprising unemployment, the resignation or withdrawal of public services and the disappearance of small and medium-sized enterprises, both commercial and other kinds."
Cependant il existe un fil conducteur, un noyau dur dont la conséquence est le chômage, le retrait ou le recul des services publics et la disparition des petites et moyennes entreprises, commerciales et autres.