My BIL is late 20s and clearly has a drug problem. Me and OH told his parents about 5 years ago that we were concerned, but it was shrugged off as a rebellious phase and that it would pass. But it hasn't. Boxing day he was clearly under the influence, disappeared alot and freaked out when my kids touched his bag. He has terrible depression and is also clearly borderline alcoholic, whilst working in a pub. But no one seems to be having conversations with him. My MIL does drugs with him on ocassion and it's just normalizing his behaviour. My FIL goes to the pub with him. They're separated and don't communicate at all and blaming each other to us. My OH and BIL have had a rocky few years so I don't think it would end well if he got involved but I feel like I'm standing by and watching a bunch of cowards skirt around a rather important subject. It's breaking my heart but I just don't know if it's my place, if I can get involved. We used to be close but ever since he smashed my house up and shouted at my children I haven't felt particular willing. I know rationally it's the depression and drugs, but no one is helping him and I feel like his parents should stop enabling it!