Was Clinton's "Daisy" ad a last swing?

The Clinton campaign put out an ad last night that has quickly come to dominate the discussion today and presumably throughout this critical weekend. (Video)

"It's 3:00am and your children are asleep," the voice over says. "There's a phone in the White House, and it's ringing. Something is happening in the world. Your vote will decide who answers that call."

The Obama campaign responded with sharp comments like those here, here, and especially here, finally ending the day posting this rather nasty retort ad pointing to Clinton's Iraq war vote.

This ad clearly targets women (what used to be called "security moms") by using children in their beds in the framing.

I don't know if this ad moves votes, but it will serve as a highly incendiary topic changer to get the news shows over the weekend to talk about this ad and the "experience" issue rather than the fact she's looking likely to lose Texas.

It's a bit of a desperate swing, and she has taken some blowback, but they've gotten the topic change (at least for today,) and from where they are, that's pretty important.

(One more bit: Apparently, there was a long awkward pause on the Clinton conference call when someone asked, "What foreign policy moment would you point to in Hillary's career where she's been tested by crisis?")