KGB Major Lt. Col. Captain Yuri Nosenko (who didn't know how to send a cable, didn't know how many floors of the Embassy were dedicated to the CIA (3), didn't know where the cafeteria was at KGB headquarters, and didn't know if his secretary was assigned to him or came from a pool, etc.) falsely defected-in-place to the CIA in Geneva in June 1962 to protect a mole or two or three in the CIA, and physically defected to the US in February 1964, claiming to have read Oswald's file four times in Moscow and that he therefore knew for a fact that the KGB had absolutely nothing to do with the former Marine sharpshooter and U-2 radar operator during the two-and-a-half years he half-a-mile from a KGB school in Minsk.
Question: Why did he feed the CIA and the FBI this implausible load of you-know-what?
Answer: Maybe because he was a rogue defector, and he used the Oswald "intel" that he was supposed to share with Tennent H. Bagley and (probable mole) George Kisevalter in Geneva as his ticket to "The Land of Milk and Honey."
But why, then, did Kremlin-loyal triple agents like Aleksei Kulak at the FBI's NYC field office support his bona fides, even having to retract statements about him that turned out to be untrue?
It's a pity that Nosenko was "cleared" by probable mole Bruce Solie in October 1968, that he got renumerated grandly "for his troubles," was naturalized as an American citizen, and that a couple of years later he was teaching "counterintelligence" to the CIA's and the FBI's new recruits.
How do you say "Gag me with a KGB spoon" in Fancy Pants Rants Speak?