Interesting theory on the near-impossibility that Caroline Kennedy, U.S. ambassador to Japan, runs for president in 2016, brought to us by Washington Post Republican blogger Jennifer Rubin:

President Obama didn’t actually deliver on [Kennedy's] dream, but who better than Kennedy to do the job? Democrats, after all, aren’t all that big on qualifications, as the incumbent president knows all too well. A true believer, a charismatic figure, a touch of a muscular foreign policy and, most of all, an alternative to the leaden predictability and political timidity of [Hillary] Clinton might be just the thing to reignite the Democrats’ passions. Democrats would get a liberal woman, one without baggage and without questions about age, Benghazi and a husband beholden to international money men. And maybe Obama would return the favor, endorsing her as his spiritual successor. Hey, weirder things have happened.