The Steele dossier, also known as the Trump–Russia dossier, is a controversial political opposition research report on the 2016 presidential campaign of Donald Trump compiled by counterintelligence specialist Christopher Steele. From Wikipedia
The declassified files allege a Clinton-led smear operation at the heart of the Russia collusion narrative; veteran CIA analysts have rebutted the claims, spurring a Justice Department review of additional declassification recommendations.