Gideon Rachman, chief foreign affairs columnist at the Financial Times, has just published a new book about autocrats, so Ian Bremmer puts him on the spot on GZERO World.

Which one appeals to you the most?

"That is difficult. I wouldn't say ... I'm running desperately through my head," says Rachman, before settling on one autocrat he's not a fan of but concedes is at least "an interesting figure."