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Manafort was an international political consultant who was known from the beginning to have had contacts with pro Russian interests in Ukraine.

Where you’re really going to get into the thicket is in decided which of the various characters associated with Trump’s campaign were campaign officials or advisors vs private citizens and hangers on.

I suspect that Flynn is in a bit of trouble re registering as a foreign agent for Turkey, but so far none of this “smoke” has revealed anything illegal or even suspicious.