Question: Why did Vladimir Putin install Donald Trump (who was "spotted" by the KGB as a possible asset in Manhattan in 1980) as our president on 20 January 2017?
Answer: To get us to defeat ourselves in a Sun Tzu-kinda way.
It was the culmination of fifty-eight years of disinformation, "active measures," and mole-based strategic deception counterintelligence operations waged against us by Departments D and 14 of the First Chief Directorate (today's SVR) and the Second Chief Directorate (today's FSB), respectively.
The FCD and the SCD -- the same folks whose article in a Communist-owned Italian newspaper in March 1967 motivated overly ambitious, scandal-plagued, and revengeful Jim Garrison to change his theory against Clay Shaw from "He masterminded the homosexual thrill-kill assassination!!!" to "He organized it for the CIA!!!", which in turn let to Garrison's lie-filled book, "On the Trail of the Assassins" and Comrade Oliver Stone's self-described mythological ("to counter the myth of the Warren Report") 1991 movie, "JFK."