I'm sure there is a 'rational' [='sensible, reasonable'] explanation for his decision.
Humans are 'rational' beings. [=are able to use reason when thinking about something]
No 'rational' [='sane'] person would behave like that.
(..) The destruction of the Sept of Baelor was a tragic accident. Indeed, but sometimes tragedies are necessary to restore order and rational leadership. The Iron Bank wants its gold back. Your father never minced words either. But, yes, your debts (..)2017 TvShow: Game of Thrones Title: The Queen's Justice Season: 7 Episode 3