As the Russia story submerged out of view in the first days of February, the Acting Attorney General had already warned the White House about Michael Flynn's deceptions and susceptibility to blackmail. She was fired for refusing to enforce the immigration executive order days later. Though the White House now denies it, it seems that the President and his top advisors took no action in response to these warnings.
We can now also see the outlines of another part of the story. It appears that repeated efforts were made to apprise President Trump or those around him of the situation with Michael Flynn. When those warnings were ignored, people in the national security and law enforcement apparatus went instead to the press to get the word out that way. Only now can we see some of the hidden actions which reveal the pattern and provide context to the leaks.
This is not some ill-considered discussion by Michael Flynn. The role of Russia in the 2016 election and the President's relationship to Russia has been the un-ignorable question hanging over President Trump for months. Flynn's resignation does not come close to resolving it. It is highly likely that the Flynn/Russia channel was authorized by the President himself. There's much more to come.