You're wrong but that's not unusual for you. Trump said you're not leaving in a few months, you're leaving now. That's called a firing. Why is it illuminating? He disagreed with him on his treatment of allies and perceived enemies. What's the big deal? Obama fired Mattis because he was too eager for military confrontation. Trump doesn't want war either. Mattis was well past his expiry date as being relevant. His beef with Trump was over treatment of foreign countries. It was a difference in opinion nothing more. I don't know how you find that illuminating?