CHUCK TODD (HOST): Presidential appointments for national security advisers do not require Senate confirmation and Donald Trump has already made his choice, it's retired Lieutenant General Michael Flynn.

Flynn was a Trump loyalist, is a Trump loyalist, and before he retired he was a highly respected intelligence officer who ran the Defense Intelligence Agency. But he has come under fire for some inflammatory tweets about Muslims, and along with his son, sharing fake news stories, and it's got MSNBC military analyst Barry McCaffrey extraordinarily nervous.Take a listen.

BARRY MCCAFFREY: I'm now extremely uneasy about some of these tweets, which don't sound so much as if they're political skullduggery, but instead border on being demented. I think that we need to aggressively examine what was going on with General Flynn and his son, dealing with these transparent, nearly demented tweets that were going out. I think it needs closer scrutiny.

TODD: Barry McCaffrey is somebody who I've noticed chooses his words very carefully.

Previously:

CNN: Trump's National Security Advisor Michael Flynn “Repeatedly Dabbled In Conspiracy Theories”

CNN Panel Highlights “How Far Fake News Can Go" When Amplified By People Like Trump Adviser Michael Flynn

Trump National Security Adviser Michael Flynn Promoted Anti-Semitic Tweet And “Diversity Is ... White Genocide” Writer

Trump Allies Promote Rape Apologist Days After Sexual Assault Revelations