Golly, aren't you the bright spark? Of course they're not neutral bystanders. They're 100% on Donald Trump Jr.'s side.

I ask again, how can it be proven that Trump Jr. made some offer on behalf of his father? How can anything be proven about the meeting, short of it being under surveillance by the police? Of the five people present, three were Trump associates. The Russian isn't talking, nor does she have to. Neither does the "publicist," who would probably gnaw his own arm off rather than make trouble for the presidents of the USA and Russia.

It's a dead end. It may have been exactly what DT Jr. said it was, and no one can prove otherwise.