Meet the Steele dossier’s ‘primary subsource’: Fabulist Russian from Democrat think tank whose boozy past the FBI ignored

The mysterious “Primary Subsource” that Christopher Steele has long hidden behind to defend his discredited Trump-Russia dossier is a former Brookings Institution analyst — Igor “Iggy” Danchenko, a Russian national whose past includes criminal convictions and other personal baggage ignored by the FBI in vetting him and the information he fed to Steele, according to congressional sources and records obtained by RealClearInvestigations. Agents continued to use the dossier as grounds to investigate President Trump and put his advisers under counter-espionage surveillance.

The 42-year-old Danchenko, who was hired by Steele in 2016 to deploy a network of sources to dig up dirt on Trump and Russia for the Hillary Clinton campaign, was arrested, jailed and convicted years earlier on multiple public drunkenness and disorderly conduct charges in the Washington area and ordered to undergo substance-abuse and mental-health counseling, according to criminal records.

In an odd twist, a 2013 federal case against Danchenko was prosecuted by then-U.S Attorney Rod Rosenstein, who ended up signing one of the FBI’s dossier-based wiretap warrants as deputy attorney general in 2017.

Danchenko first ran into trouble with the law as he began working for Brookings — the preeminent Democratic think tank in Washington — where he struck up a friendship with Fiona Hill, the White House adviser who testified against Trump during last year’s impeachment hearings. Danchenko has described Hill as a mentor, while Hill has sung his praises as a “creative” researcher.