National Security Advisor Michael Flynn resigned Monday after the controversy regarding his communications with Russian Ambassador Sergey Kislyak.

Flynn and Kislyak had been speaking since before the election, and according to nine intelligence sources cited by The Washington Post, some of those conversations dealt with the sanctions the Obama administration slapped on Russia.

On January 15, Vice President Mike Pence told Face the Nation host John Dickerson that Flynn and Kislyak "did not discuss anything having to do with the United States’ decision to expel diplomats or impose censure against Russia."

Pence added:

"General Flynn has been in touch with diplomatic leaders, security leaders in some 30 countries...That’s exactly what the incoming national security adviser should do. But what I can confirm, having spoken to him about it, is that those conversations that happened to occur around the time that the United States took action to expel diplomats had nothing whatsoever to do with those sanctions."

Cut to February 8--Flynn was asked by The Washington Post if he and Kislyak had ever discussed the Obama administration sanctions during their ongoing communications. The former NSA twice denied it.

The following day, The Post released a story in which they cited the nine anonymous intel officials contradicting Flynn's claim. A spokesman for the NSA quickly changed the narrative, saying that "while [Flynn] had no recollection of discussing sanctions, he couldn’t be certain that the topic never came up."

After The Post story broke, Flynn allegedly spoke with Pence over the phone, and apologized for offering him incomplete information.

Monday, Fox News national security correspondent, Jennifer Griffin, sent out a tweet in which she stated that a White House source was "push[ing] back on [the] rumor that Flynn will be gone by end of week":

Monday evening, Michael Flynn resigned.

Tuesday, the former NSA's son, Michael Flynn Jr., hit back on Twitter, claiming his dad was the victim of "disinformation campaign":

A son has every right to defend his father, and there is likely a great deal of information the press, as well as the American people, do not know. However, while the mainstream media certainly pushed this narrative, it couldn't have done so effectively if Flynn's actions had been above reproach.

Flynn made a series of foolish mistakes--allegedly speaking with Sergey Kislyak about the Obama administration sanctions, telling Mike Pence he didn't, twice telling The Washington Post he didn't, and then changing his story after multiple intel officials contradicted his claims.

One can argue that Flynn's mistakes aren't significant enough to warrant resignation, but that's a different debate.