Well sure. However you didn't say go after them for money laundering in your OP. You said go after the families of war-enablers.
Freezing someone stolen wealth has nothing to do with a war crimes.
> And their families and kids who all keep their money in US, UK and EU.
Let's just say, for arguments sake, there is a child who is genuinely estranged from his war-enabling parents, living in Europe on his own dime. Should they fall under these sanctions? I would say no.