The FISA Spying on Team Trump began in late October 2016. But the FBI's whole case rested on the Steele Dossier which had never been corroborated. In January 2017 the FBI interviewed the main source for the dossier. Could he corroborate it? That’s the focus of this report.
Christopher Steele had no first hand knowledge of anything he put in his dossier. The information was mostly supplied by someone referred to as the Primary Sub-Source, someone Steele hired to do the research for him. When the FBI interviewed Steele in October 2016 he refused to reveal the identity of his source.
But in January, the FBI found and interviewed him. The Primary Sub-Source debunked the entire dossier. But the FBI interview team buried that fact for 34-months. The FBI's failure to tell the FISA Court that the main source for the dossier blew a hole in the government's case was one of the most significant errors in the entire investigation.
The FBI interviewed the main source for Chrisopher's Steele's dossier in January 2017 and twice more in later months. Only the summary for the January interview has been declassified and released, The source was identified as the "Primary Sub-Source in the Inspector General's report.
The source's name remained a secret until July 2020. He's been identified as Igor Danchenko. He was an employee of Christopher Steele's firm. While he worked on the dossier Danchenko lived and worked in Washington, DC. Here is a link to the FBI 57-page summary of the interview that was released by the Senate Judiciary Committee. Link to FBI document: FBI Summary of Interview
One of the most important resources to understanding "Spygate" is a report by the Department of Justice Inspector General. It was issued in December, 2019. SpyGate Truth repeatedly refers to it, citing page numbers for the source information we report. You can look for yourself. Here's a link to the full report. Be advised, however, it's 474 pages long and does not read like a spy novel.