Sen. John McCain hasn't had good luck joking about Iran. But he tried it again Tuesday.

Responding to a question about a survey that shows increased exports to
Iran, mainly from cigarettes, McCain said, "Maybe thats a way of killing them."

He quickly caught himself, saying "I meant that as a joke" as his wife, Cindy, poked him in the back.

Last time, it was also Iran. His singing about bombing Iran to the theme of the...