Something triggered the release of that video. Could have been Perry jumping in - who knows?
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There has long been the Palin/Perry theory here about them working in concert. What better method to take down the boy emperor than to tag-team him the entire way through the primaries and to the Convention? Perry as wingman?
My perception is that Rick Perry broke formation and flew off on his own renegade mission. I think he may have disrupted an earlier, carefully planned strategy, and that is why Palin is suddenly so active.
Observe - Orient - Decide - Act...... she's engaged in the battle that is, not the one that was.