Amidst his ongoing “This Is Not a Drill Tour,” Roger Waters sat down with CNN’s Michael Smerconish to discuss the overly political themes and messages presented at his concert.

Smerconish began the interview by asking Waters why he labeled President Joe Biden a “war criminal.” “Well, he’s fueling the war in the Ukraine,” the former Pink Floyd member responded. “That is a huge crime. Why won’t the United States of America encourage [Volodymyr] Zelensky to negotiate, obviating the need for this horrific, horrendous war?”

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When Smerconish pointed out that Waters was “blaming the party who got invaded,” Waters countered by criticizing NATO for forcing Russia’s hand. “Well, any war, when did it start? What you need to do is look at the history, and you can say, ‘Well, it started on this day.’ You could say it started in 2008… This war is basically about the action and reaction of NATO pushing right up to the Russian border, which they promised they wouldn’t do when [Mikhail] Gorbachev negotiated the withdrawal of the USSR from the whole of Eastern Europe.”

Read more: Consequence