Waters, 78, who is presently on a solo tour, branded Biden with the provocative title throughout a montage played at his rock show.
The British musician got into a heated debate with CNN host Michael Smerconish over the weekend after the journalist questioned Waters' choice to include Biden in the provocative part of his show.
Waters justified including Biden in his war criminal montage by stating the US president committed a "huge crime" by not encouraging Ukrainian President Volodymyr Zelensky to negotiate and put an end to "this horrific, horrendous war."
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The pair further claimed over America's part in the Russia-Ukraine conflict, as well as the continuous tension between China and Taiwan.
Waters thinks the US has overstepped by involving itself in these foreign affairs and is pushing "liberator propaganda."
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Amid his highly political This Is Not a Drill Tour, Waters sat down with Smerconish to discuss the messages depicted throughout the concert.
The CNN host began the interview by probing Waters regarding the "war criminal" label he slapped Biden with.
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"Well, he's fueling the war in the Ukraine," the Pink Floyd co-founder replied. "That is a huge crime. Why won't the United States of America encourage Zelensky to negotiate, obviating the need for this horrific, horrendous war?"
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Smerconish hit back, accusing Waters of "blaming the party who got invaded," however the musician countered by accusing NATO of 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," Waters claimed.
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"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."
Smerconish suggested the US has a history of taking on the part of global "liberator," which Waters immediately dismissed.
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"You got into World War II because of Pearl Harbor. You were completely isolationists," the musician claimed.
"Thank god the Russians had already won the bloody war by then. Twenty-three million Russians died, protecting you and me from the Nazi menace."
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He further addressed the continuous conflict between China and Taiwan, which saw heightened tensions after US House Speaker Nancy Pelosi made a surprise visit to the self-ruled island nation.
Pelosi issued backing for the nation and vowed China "would not isolate Taiwan" by preventing US officials from traveling there. Her comments came as Beijing increased its military intimidation and launched ballistic missiles towards Taiwan.
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