Want more Darth Vader? You've got it, in a new international trailer for "Rogue One: A Star Wars Story."

The new teaser features a lot of the same footage as the first full-length trailer, but there are some key differences. It reveals a little more of Jyn Erso's (Felicity Jones) background, a little more of Darth Vader, and the origin of the film's title — "Rogue One" is the call sign that Jyn's team of rebels uses on their mission to steal the plans for the Death Star.So, let's analyze! The trailer shows us a woman who seems to be Jyn's mother. We already knew her father is played by Mads Mikkelsen and that he has ties to the Death Star project. But Jyn's mother gives her a crystal, which the adult Jyn continues to wear.

Fans have already speculated that kyber crystals, used to make lightsabers, are a component of the Death Star. That Jyn is given one as a child suggests that her father was doing something with the crystals and that he was taken by the Empire to use them to build the Death Star.

Not much can be gleaned from the additional shots of Vader -- but they're just cool.

"Rogue One" opens in theaters December 16.

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