How do you think he might respond if you simply told him that? "I love you and want to see you living the best life that you can, but I am just to where I can't live like this anymore." You could tell him about how it helped you when he confronted you about your drinking, and tell him that now you want to do the same for him.

The thing is, if he will go to therapy and make changes so that you and the kids can be around him, would you want him around? And if he isn't willing to change, are you willing to leave?