Earth's unchallenged dictator.
I wouldn't call it unchallenged. I mean, we're in the middle of a civil war. B5 isn't the only place that's broken away, some defecting ships are from Earth, and I'm sure we'd hear more about unrest back home if Clark didn't control the communications and media. It is a military dictatorship.
That said, Illusion of Truth is not my favorite episode. It is
painfully obvious. I'd watch it for the arc stuff, but I won't be shedding any tears if you skip parts.