Time for a Republican POTUS and his Republican AG to start taking some of these treaties to SCOTUS and breaking them like the dry sticks that they are. And if SCOTUS won't do it -- well, there's the repealer and demarche route, and Russia and that Murderers' Row of Habitual Rights-Offending States, however self-constituted, can k.m.a.
It's never been done. Not one.