Hmm, while I wondered if Putin of Russia could be so petty as to have a "vendetta" against Hillary Clinton, perhaps Putin's foreign minister Lavrov telegraphed Russia's game all along.
At the "reset" photo op, it was a literal middle finger aimed at Secretary of State Clinton and her offered warming of relations.
She isn't laughing so hard now, I guess.
And actually, Putin and Lavrov aren't laughing anymore, either. Now all their hacked Clinton server emails are kind of worthless.