Moreover , powerful former and current security figures and their families , such as ali duba and muhammad nassif , play major but clandestine roles in syria 's security apparatus .

此外，以前和现在强大的安全人员及其家族，如阿里杜巴和穆罕默德约瑟夫，在叙利亚的安全事务方面暗地里发挥了重要的作用。