Steve Bannon breaks with Trump. Calls firing of James Comey "the biggest mistake in modern political history."

Courtesy of The Hill: 

Asked during an interview on "60 Minutes" Sunday if it was true that he called the Comey firing the "biggest mistake in political history," Bannon said, "That probably would be too bombastic, even for me, but maybe modern political history." 

Bannon told interviewer Charlie Rose that had Trump not fired Comey, the president would not be faced with an investigation into possible Russian interference in the 2016 presidential election. 

"I don't think there's any doubt that if James Comey had not been fired, we would not have a special counsel," Bannon said, referring to Robert Mueller. 

“We would not have the Mueller investigation, we would not have a Mueller investigation in the breadth that clearly Mr. Mueller is going in.”

I agree with Bannon that there would likely be no Special Counsel assigned to this instigation, however I do not think the FBI's version would be really any less aggressive.

What the Russians did was an attack on our very democracy, so the law enforcement agencies were simply not going to sit back and do nothing about it.  

And even before the firing of the FBI Director Trump was showing signs of guilt and making attempts to obfuscate, so that would only have drawn more intense scrutiny even without this blatant attempt to sabotage the investigations.