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.
(..) is that interim? We have no way of knowing for certain. But it's clear that people are far too emotional right now to make a rational decision. We'll plan an election when the time is right. But I have called you here for a far more important vote. A symbolic vote. (..)2015 The Hunger Games: Mockingjay - Part 2