When you arrive on Columbia in BioShock Infinite, groups are already fighting, killing, and generally making the place a bloody wreck. That's sort of BioShock's thing. But just in case you want a deeper understanding of the political disagreements that led to all-out war, Irrational Games has released a new "Factions at War" trailer.

In it, Ken Levine explains the heady ideals of Columbia and the political turmoil that tore it apart. Plus we get to see plenty of the beautiful steampunk setting, and hear some personality from the protagonist. Check it out below, and read up on our E3 preview for hands-on impressions.