Actor and director Sean Penn argued that the letter to Iran by 47 Republican Senators was “mutiny” and “perhaps” criminal on Friday’s broadcast of HBO’s “Real Time.”

“When a young William Jefferson Clinton was at Oxford and protesting the Vietnam War, and then later ran for the President of the United States, they said that he was a traitor for protesting from foreign shores and the moment that that letter arrived in Tehran, they were protesting from foreign shores. And in fact — I think that where we should not be looking at this, is not in terms of treason, but mutiny and I think perhaps criminal mutiny” he stated.

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