Michael Flynn has resigned:

Michael T. Flynn, the national security adviser, resigned on Monday night after it was revealed that he had misled Vice President Mike Pence and other top White House officials about his conversations with the Russian ambassador to the United States, according to a person close to the Trump administration.

Flynn’s departure is very good news for the country, and it could be good for the Trump administration if he is replaced by someone less fanatical and much more competent. It was obvious for a long time that Flynn’s worldview was warped and a terrible influence on the president, and he never seemed ready for the position he was given. The dysfunction of Trump’s National Security Council may not have been entirely his fault, but it was his responsibility and he was clearly not getting the job done.

His early resignation marks the quickest exit of a top presidential adviser that I am aware of, and very few will be sorry to see him go. The danger is that Trump will choose someone else just as unprepared or possibly even less qualified to do the job, but the exit of one of the most hard-line Iran hawks from the administration is practically the only good thing that has happened related to foreign policy since Trump was sworn in. The Trump administration continues to have many top officials that share Flynn’s Iran obsession, but perhaps with his exit that obsession will grow a little bit weaker.