STAR WARS

IS Darth Vader a Sith?

Vader reports to Tarkin that Kenobi is on the Death Star:

Tarkin makes two statements;
"The Jedi are extinct" and that Vader is "all that's left of their religion".
That's twice now we have discussions of the fall of the Jedi and no mention of the Sith.
Tarkin in fact seems to be indicating that Vader is a Jedi, and Kenobi CALLED Darth Vader a Jedi.
So let's see, it's a terrible thing that the Sith showed up after a thousand years and managed to wipe out the Jedi, but neither side mentions it when reviewing history.
A suspiscious 'omission'.

Just to get all this clear - after a 'thousand generations' (so what is that, thirty thousand years?!) TWO SITH show up.
They haven't been around for a thousand years.
The only reason they were able to do what they did is because they managed to hide from the Jedi, who were keeping an eye out for them all that time...
And NOBODY.
EVER.
MENTIONS.
THIS.
Nobody ever says 'then those dirty Sith sneaked up on our ass and blew us away', or 'thanks to those dirty Sith we beat the cruel Jedi'?
Not a word?
From EITHER SIDE?

Uh huh.

Are the Sith supposed to BE Jedi?
Many seem to think so. Here's how starwars.com defines the Sith:
"An ancient order of Force-practitioners devoted to the dark side and determined to destroy the Jedi, the Sith were a menace long thought extinct."
Definitely seems to be a seperation there.

Vader convinces Tarkin that he has a score to settle with Kenobi and goes off to find him.
After twenty years or more, Anakin goes to do battle with Obi-Wan and pick up where they left off.
OR
Vader is actually collaborating with Kenobi
Initially, I thought this added incredible complexity to everything, making it unlikely.
The main nagging bit of evidence is the mysterious circumstances of Kenobi's death (or rather, disappearance).
And of course, Leia's recorded message