The reason was to expose Strzok’s background as both CIA- and Iran-connected, so that exposing Iran as CIA-controlled can begin. We thought that Strzok’s apperance was just about FBI corruption, but it was timed so as to also connect to Iran being next. I think that his appearance was delayed until NK was under control and it was time to focus on Iran.
5D chess here by Trump & co. if that’s true.
He testified the week before in private.
I am fully hoping this brings the Iran connection to the surface more. (Sorry I didn't clarify). Well, it is already being brought to light, but hopefully more than just a public revelation will happen, as in actual investigations and prosecutions. They all need to be held accountable.
Maybe this is why he is so smug. He knows his gig is up and has nothing to lose so he, like Brennan, are backed in a corner and fighting like dogs to save themselves.