? about ROTJ
When Palpatine was trying to lure Luke to the dark side he was telling him to take his Jedi weapon and strike me down with it and your journey to the dark side will be complete.
Well when Luke grabbed it and was going to kill Palpatine Vader stopped him. Why did Vader stop Luke from killing Palpatine?
Was Vader actually trying to help Palpatine or to save Luke from turning to the darkside?