Wuf, your reasoning that Trump is innocent because he is allowing Mueller to continue doing his job is erroneous and does not encapsulate the interests and incentives for all the pieces on the board.

If Trump fires Mueller now, there is no way it can look good. A significant portion of the electorate will see it as obstruction. This is bad for everyone. It puts the republican congress in a tough spot, etc.

Sessions moves all point towards him thinking impeachment or a failed bid at a second term are likely. He's doing just enough to appease Trump and the base and otherwise staying out of it.

Mueller has all the incentive to take down a president. That is how he makes it into the history books. Nothing about him says he's interested in anything Trump, or pretty much anyone else has to offer. He is not climbing the ladder, this is the top. This is his moment.

The truth is, Trump is playing 3D chess, as is everyone else involved. The question though is who is a fish? Who understands basic strategy and who is a grandmaster? The fun thing with this view is that it doesn't put all its weight on an assumption of anyone's ability except that the Russians probably have to be Grandmasters and I've got no qualms about this being where my money lies.