Reagan told Clarence Thomas of the Chicago Tribune that Cheney was a war criminal because of his support for waterboarding, while the two were discussing Cheney's recent interview with NBC.
"Not to hammer the point at all, but any neutral reading of say, the U.N. Convention Against Torture makes it pretty clear that if you support waterboarding and you enact that sort of a policy, you're guilty of a war crime," Reagan said.
Here's a clip of the conversation between Reagan and Thomas:
This isn't the first time Reagan has accused Cheney of being a war criminal.
Below at 1:34, Reagan makes the accusation on Joy Behar's show. His statements sparked a controversy in the media world, and earned him a response from Bill O'Reilly just a few days later: