I think it really came down to two basic things, one, what General Mike Flynn did, and just what he discussed with the Russian ambassador, but, more significantly, how he misled senior officials at the White House, including Vice President Mike Pence, about the nature of those communications.

That's the job of the National Security Council is to try to be a disciplined clearinghouse, gathering the views from across multiple agencies, teeing up decisions that make sense for the president.

I think it really came down to two basic things, one, what General Mike Flynn did, and just what he discussed with the Russian ambassador, but, more significantly, how he misled senior officials at the White House, including Vice President Mike Pence, about the nature of those communications.