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Hoo boy, has John McCain lost it. Yesterday, on Meet the Press, he blathered on for a while about all the unanswered questions he supposedly has regarding Benghazi—most of which have been answered, of course—and then accused President Obama of a “massive cover-up.” David Gregory interrupted McCain and asked the question that regular readers know has also been nagging at me from the start: “What is the cover-up? Of what?” Here’s McCain’s McCarthy-esque spluttering when Gregory challenged him:

Do you care….do you care, David….do you care, David….do you care….I’m asking you, do you care….I’m asking you, do you care whether four Americans died? ….You said there’s a cover-up. A cover-up of what? A cover up of what? Of the information concerning the deaths of four brave Americans.

So that’s that. When he’s challenged about the ridiculous cover-up charge, which has never made sense from the start, McCain’s answer is to accuse Gregory of not caring about the deaths of four brave Americans. Welcome to the modern Republican Party.