The hire of Anthony Scaramucci set off a chain of events that changed the makeup of the White House staff. Lingering tensions, factions and alliances had already laid much of the groundwork, but Scaramucci's entrance served as the catalyst.
As Axios' Jonathan Swan put it: "Jared and Ivanka brought Mooch in to get rid of [Reince Priebus] and [Steve Bannon]. He did it in a gorier and more chaotic way than anyone expected. He took out Reince and his extreme disruption appears to have catalyzed the reordering of the West Wing and increased urgency to getting rid of disruptive forces internally."