Political scientist & author Brian Klaas says “strongmen” leaders like Vladimir Putin activate a template in the human brain, causing many to gravitate toward them. Klaas tells Reality Check’s John Avlon about his research into sociopaths - how they are naturally drawn to power and all too often, succeed in getting it.

Watch more on CNN:
https://www.cnn.com/specials/us/john-avlon-reality-check