The baltics have even more vivid memories of soviet life don't they? And nato trip wire troops so any attack would be killing french and uk soldiers (nuclear powers). Trump was talking about taking Greenland by force right up until the trip wire forces arrived. It is an odd job as a soldier to be a hostage I think, but it seems to work. It would be more reliable for Poland to obtain its own nuclear deterrent, along the lines of the buffers vs dependencies argument in the post. There has been talk, but that seems difficult.