The speculation before Senator Obama left for Iraq that he would possibly commit a presidential-bid-ending gaffe was deafening. So naturally the media was caught off guard when John McCain managed to beat Obama to the punch.

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Stewart: Come on! This guy is a newbie! You can't snag one faux pas, one misstep, a blunder, a boo boo, a brainfart? Something small...a geography mix-up?

McCain: It’s a very hard struggle, particularly given the situation on the Iraq-Pakistan border.

Stewart: The Iraq-Pakistan border, otherwise known as... IRAN.