That's the message the Clinton campaign is sending in their new ad.

"It's 3am and your children are safe and asleep.  But there's a phone in the White House and it's ringing. Something's happening in the world.  Your vote will decide who answers that call.  Whether it's someone who already knows the world's leaders -- knows the military -- someone tested and ready to lead in a dangerous world.  It's 3am and your children are safe and asleep.  Who do you want answering the phone?"

It's an excellent point to make against Obama during the primary.  Thanks Hillary for framing the issue perfectly for John McCain.