you can't control what your dad does, anymore than your brother. regardless of your views and opinions on what he SHOULD or should NOT do, it's not your call. it's not the world's job to protect your brother's sobriety, it's HIS job. that he chooses to drink is his thing. is it a good idea???? probably not! is it good that at least right now he's off the hard drugs? most definitely. might he need to stumble and find out that drinking is just a slower path to the same train wreck? he'll have to find that out for himself.