“I stand by the work we did, the sources that we had, and the professionalism which we applied to it,” Steele told ABC News’ George Stephanopoulos in the forthcoming documentary, “Out of the Shadows: The Man Behind the Steele Dossier” — an exclusive preview of which aired Sunday on “This Week with George Stephanopoulos.”

In his first major interview, Steele described how and why he wrote the 17 reports that made up the so-called “Steele dossier,” which accused former President Donald Trump’s campaign of conspiring with the Russians to tilt the result of the 2016 election…

Perhaps the most attention-grabbing headline from the Steele dossier — and another claim that remains uncorroborated — was a report of the supposed existence of a “pee tape” allegedly collected by Russian intelligence services. According to the dossier, the tape purportedly shows Trump “employing a number of prostitutes to perform a ‘golden showers’ (urination) show in front of him” on a bed where the Obamas supposedly once stayed.

Steele told ABC News he believes the alleged tape “probably does” exist — but that he “wouldn’t put 100% certainty on it.”