McCain campaign politicizes terrorism in new ad.

This morning, the McCain campaign released a new ad blasting Joe Biden for suggesting that our enemies will “test the mettle” of the new President. With ominous music, dark overtones, and images of potential conflict, the ad overtly states another potential attack “doesn’t have to happen” if McCain is elected. But McCain’s own allies — Joe Lieberman and the Bush White House — have asserted that it is likely to happen:

Lieberman: “Our enemies will test the new president early.”

White House spokeswoman Dana Perino: “I think Senator Lieberman, unfortunately, could be right.”

Watch a compilation: