Inside Trump’s anger and impatience — and his sudden decision to fire Comey

A detailed accounting of Trump's decision to fire Comey:

https://www.washingtonpost.com/politics/how-trumps-anger-and-impatience-prompted-him-to-fire-the-fbi-director/2017/05/10/d9642334-359c-11e7-b373-418f6849a004_story.html