: On Centauri Prime, Londo Mollari and G'Kar form an unlikely alliance to assassinate the mad Emperor Cartagia . In exchange for G'Kar's help, Londo secures the liberation of the Narn homeworld.
: The season concludes with the formation of the Interstellar Alliance , a galactic government with Sheridan as its first President. Behind-the-Scenes Context Babylon 5 - Season 4
: Season 4 ends with the departure of Susan Ivanova (Claudia Christian) and the death of Marcus Cole , who sacrifices his life to save hers using an alien healing device. : On Centauri Prime, Londo Mollari and G'Kar
The breakneck pace of Season 4 was primarily driven by real-world uncertainty. Behind-the-Scenes Context : Season 4 ends with the
: With the cosmic threat gone, Sheridan turns his attention to President Morgan Clark's totalitarian regime. This campaign culminates in the Battle for Earth, where Clark commits suicide as Sheridan's forces breach the planet's defences.