Kerry Pivot?

Is Kerry pivoting from proving that he can defend the country, to accusing Bush of irrelevance by pointing out that the main theme of Bush's candidacy is flawed? Bush appears frightened by Kerry's proposition. In fact Bush's ads may/should backfire on him.
I'm impressed that media has been good about reading the ENTIRE Kerry quote instead of just repeating "terrorism...nuisance?".
The picture in the magazine is strange though.
President can't exist without the threat of terrorism. I think that's pretty clear. But can America let go of this nightmare? This imaginary goblin? Can America handle not living in fear? Are we ready?
It's a big gamble for Kerry, but one that I hope will prove to be a success. This war has gotta end. And we're the only ones who can decide if we're at war or not.