Jill Dougherty is currently a CNN contributor. She is a former CNN foreign affairs correspondent and Moscow bureau chief with expertise in Russia and the former Soviet Union. She is currently a member of the Advisory Council of the Woodrow Wilson Center's Kennan Institute.
(CNN)Just how tight are Donald Trump and Vladimir Putin? It's a question many are asking following the damaging release of leaked Democrat National Committee emails this week -- and after Trump called for Russia to hack Hillary Clinton's emails on Wednesday.