Here's Sullivan on Trump's remarks made at his one hour news conference today:
Said advisor Jake Sullivan: "This has to be the first time that a major presidential candidate has actively encouraged a foreign power to conduct espionage against his political opponent. That's not hyperbole, those are just the facts. This has gone from being a matter of curiosity, and a matter of politics, to being a national security issue."
But Politico reported in February, here:
Hillary Clinton's top national security and foreign policy staffer Jake Sullivan was one of the authors of messages that appeared on several Hillary Clinton email chains recently labeled "top secret" by the State Department, according to multiple intelligence sources who have seen the correspondence.
The GOP details Jake Sullivan's own role in the compromises of national security here.