I'm not an expert on the whole Georgia/Russia situation, nor do I have the time to invest to be that person.  However, when it comes to phrases like:

"... the letters by Frank Schnittger and John Gunning attempting to link America to the catastrophe were ludicrous."

"...would be laughable if they weren't so serious."

"...in his case to be surpassed by a virulent anti-Americanism."

"... exposes a somewhat casual acquaintance with reality."

"...he and Mr Gunning seem determined to spin the appalling situation in an effort to benefit and further their own anti-American agendas."

"...I would ask that they, and others who espouse the same views, would cease masquerading as such."

This sounds like the kind of crap you would learn in Debating 101 or out of Karl Rove's playbook.  If a person had hard irrefutable evidence to counter your letter, they would use it.  You see this kind of bullshit arguing from the ultrawealthy neofascists all the time.  "If you don't have the facts on your side, dazzle them with bullshit".  My ex-father-in law IMB typewriter salesman's motto.

This person is looking for attention in any form; should or how should you respond?  How do you treat a misbehaving 2 year old who wants your attention at any cost?  How do you spank this person?

Not my field.

They tried to assimilate me. They failed.