06/07/2010 05:12 am ET Updated May 25, 2011

Pat Buchanan Confused By 'Cyberattack' (VIDEO): Chris Matthews Explains Cyberattack To Conservative Commentator

Chris Matthews had to explain what a cyberattack was to conservative MSNBC commentator Pat Buchanan Wednesday during "Hardball."

Matthews, Buchanan, and Ron Reagan Jr. were discussing Congresswoman Michele Bachmann's attack on the White House Wednesday for its new Nuclear Posture Review, which outlines how the U.S. would use its nuclear weapons.

Bachmann told her supporters that the new rules would hurt the United States' efforts to defend itself. She argued that in the event of a cyberattack, the U.S. would not be able to use nuclear weapons to retaliate.

Matthews seemed to be blown away that someone would consider nuclear retaliation to a cyberattack. Buchanan appeared to be confused.

Matthews: How about the cyberattack part of this?

Buchanan: Look, to have a cyberattack you need a nuclear weapon on the other side because a cyberattack...

I mean... the top... you mean the east...

Matthews: She was saying that if we get hit with a cyberattack we should strike back with nuclear...

Buchanan: Well I see, you mean just computers. Do they mean computers?

Matthews: Yeah, that's what she means.

Buchanan: or the attack in the atmosphere which?...

Matthews: No, no, no. She's talking about cyberattack.

Buchanan: If they hack into your computer?

Matthews: If something is happening to our computer system, we just strike with nuclear weapons.

Buchanan: I don't think I'd strike with nuclear weapons if they hacked into my computer, no.