STRATEGY SESSIONThe Liar’s main campaign weapon: fearhttp://2012.talkingpointsmemo.com/2012/01/what-theyre-scared-of-mitts-existential-rhetoric-resonates-with-iowans.phpAs he’s pivoted back to a campaign focused almost entirely on President Obama, Mitt Romney has raised the alarm: 2012, he says, is about nothing less than the very “soul of America.”Iowans I talked to at two of Romney’s campaign