This is so rich!! This letter provides proof of intent when cross-examined against the facts. This careless CYA only indicates she was aware of wrongdoing.
Despite his claims that he met only once with 0bama, we now know James "Jimmy The Weasel" Comey met with him repeatedly; this much of the headline is true; but the wider depiction in the headline is completely false. 0bama did not believe Trump was a Russian spy for a second. He had one of the henchmen of a seditious conspiracy against the United States in his office frequently, despite Comey's lying under oath about it to Congress. 0bama knew The Dossier was a fabrication.
The only really interesting question is not "what did 0bama know, and when did he know it?" But rather, "how much can we prove about what 0bama knew, and will he face any consequences?"