Of the many astonishing revelations now emerging from the Russia investigation, not enough has been made of the fact that Peter Strzok -- that Zelig of the FBI who mysteriously appeared at every controversial moment -- was second in command for counterintelligence. That's right, counterintelligence -- that activity "designed to prevent or thwart spying, intelligence gathering, and sabotage by an enemy or other foreign entity." And yet that same Mr. Strzok was conducting a clandestine extra-marital affair with an FBI colleague over thousands of text messages that could be and likely were (more of that in a moment) intercepted by...