John Dean, Nixon’s former White House counsel and a key figure in the Watergate scandal, unleashed on President Donald Trump in a tweet Sunday night and called him a “wuss.”

“Trump’s bitching and whining and complaining is non-stop. The presidency reveals its occupant: Trump’s not only incompetent he’s actually a wuss,” Dean wrote. “Like most bullies he’s a coward. As with most autocrats he’s a very frightened person. He’s a fake leader, who thinks nasty is strong.”

Dean’s broadside comes in response to the president’s tweets Sunday complaining about special counsel Robert Mueller‘s probe. Trump rage tweeted Sunday: “The Russian Witch Hunt Hoax, started as the ‘insurance policy’ long before I even got elected, is very bad for our Country. They are Entrapping people for misstatements, lies or unrelated things that took place many years ago. Nothing to do with Collusion. A Democrat Scam!”

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