But C.I.A. officials, led by the counterintelligence chief James Jesus Angleton, were convinced that Mr. Nosenko was a double agent sent by Moscow to muddy the waters
Source: What Cold War Intrigue Can Tell Us About the Trump-Russia Inquiry – The New York Times.
You can pre-order my forthcoming biography of James Angleton now:
The Ghost: The Secret Life of CIA Spymaster James Jesus Angleton: Jefferson Morley: Amazon.com: Books