Translate the following English sentence to French:
"Can you not guarantee increasing the police presence to 5 000 officers and training local officers, who would naturally find it easier to clear up crimes than would officers from abroad?"
Ne pouvez-vous pas garantir un contingent policier fort de 5 000 hommes ainsi que la formation d'agents locaux, qui pourraient évidemment élucider plus facilement les crimes que des agents étrangers ?