The video I posted, and also this one are the only ones where he outright takes sides, and in the other video it's clear he's not a liberal. His Roman history series also takes time to talk about the people, and I'm betting his view on Julius Caesar has been influenced by Parenti to a degree. I've been following his channel for a long while, and aside from a video here and there, you wouldn't know what his politics are, because he's doing a good job stating the facts and his analysis usually focuses on sources.

In his channel's early days, he did a series on NATO which was pretty critical of it. Here's the first video in that series.