Washington( CNN) The war that erupted between the White House and Steve Bannon Wednesday is one many people inside the West Wing feared would happen after the former chief strategist was pushed out of the administration some months ago.

While it is unusual for a former White House official like Bannon to trash a fellow top aide on the record — in this case, Jared Kushner, the President's son-in-law — specific comments are a continuation of a long-running feud between the two men.

After Bannon spent the last several weeks lobbing criticism at President Donald Trump's inner circle and questioning the way the White House operates, tensions simmered over Wednesday after Bannon was quoted calling a meeting between Kushner, Donald Trump Jr. and a Russian lawyer “treasonous” and “unpatriotic” in an extract from Michael Wolff's forthcoming volume “Fire and Fury: Inside the Trump White House.”