A former CIA official who exposed waterboarding practices on war on terror detainees isn’t a fan of the anonymous whistleblower in the Ukraine case undergirding the impeachment inquiry of President Trump.

“I don’t think he’s a whistleblower. I think he’s an anonymous source and there’s a big difference,” said John Kiriakou, who served two years in prison over the revelations from the Bush administration, becoming the first CIA officer to be convicted of disclosing classified information to a reporter.