Vertaling van "carefully nourished because " (Engels → Frans) :

The conflict with Israel is being carefully nourished, because the tension that this brings with it means that the Syrians could well consider the continued existence of the regime as the lesser of two evils.
Le conflit avec Israël est alimenté assidûment, car la tension qu’il entraîne signifie que les Syriens pourraient bien considérer le maintien de ce régime comme un moindre mal.