From the official site of Star Wars: The Old Republic:

"Due to escalating tensions on the devastated, war-torn world of Balmorra, both the Sith Empire, and the Galactic Republic are looking for new recruits to ship out! Be sure to get caught up on the newest playable planet in the Star Wars™: The Old Republic™ universe! Find out more about the story and struggle of this manufacturing world famous for its battle-droids and weapons.

Access the HoloNet entry to read the story behind Balmorra’s escalating tensions, as Republic-sponsored Balmorran Resistance forces strive to keep the planet’s resources out of Imperial hands. Don’t forget to visit the Media page to see Balmorra brought to life in stunning screenshots, concepts, and wallpapers!"