I blame him for throwing Flynn under the bus. He should have fallen on his sword then had he any honor.
Some of Flynn's phone calls to the Russian ambassador (Kislyak) in December 2016 were made on his personal cell phone while he was vacationing in the Dominican Republic. I can't even imagine how many foreign governments have access to the cell phone transmissions in a third world dump like the Dominican Republic.
That itself was such an egregious breach of national security that he should have been immediately disqualified from even working as a janitor in the White House.
National Security Adviser? What a joke. I think the guy is a moron.