2) is interesting because going down this path would involve investigating the motivation behind WikiLeaks communicating with the GRU and what WikiLeaks intended to do with the information they obtained once they did so (just a one-shot dump of everything versus strategically-times leaks). The timing of Assange’s arrest occurring a few weeks after the conclusion of the Mueller investigation seems opportune albeit coincidental. A more sinister and cynical interpretation of this timing would be an attempt to wrap up any perceived loose ends.
If we're talking coincidences, I can't get over how this is happening right in the middle of Brexit, and immediately after the successful Cooper-Letwin bill to stave it off further.
Edited a few times after proofreading.