In an interview with CBS News, Ann Romney, wife of Republican presidential candidate Gov. Mitt Romney (R-MA), has said that she doesn't believe that the campaign to re-elect President Barack Obama is playing fair, and that their only campaign philosophy is "Let's kill this guy." The former Massachusetts First Lady was sitting next to her husband at their summer vacation compound, an $8 million estate that includes a $640,000 boat house on New Hampshire's Lake Winnipesaukee.

"I feel like all he's doing is saying, 'Let's kill this guy," she told reporter Jan Crawford while pointing to her husband, "And I feel like that's not really a very good campaign policy."

Romney was referring to a thinly-sourced Politico story from August of 2011, in which an unnamed "prominent Democratic strategist aligned with the White House" said that the president's then-sagging approval ratings were going to leave the Democrats no choice but to go negative. “Unless things change and Obama can run on accomplishments," he or she said, the president "will have to kill Romney.”

When asked if she would like to see a woman as her husband's selection for the Vice Presidential nomination, Romney demurred, saying she'd "love" that option, but that she has faith that Gov. Romney will choose the person best suited to the job.

Watch the video, which aired Thursday, July 5, and is embedded via CBS News, below: