Conversation so far:
Who played Yoda
Frank Oz provided Yoda's voice in each film and used his skills as a puppeteer in the original trilogy and Star Wars: Episode I – The Phantom Menace.
Why was Yoda important in Star Wars Episode III: Revenge of the Sith?
In Revenge of the Sith, Yoda leads the Jedi Council in pursuing the mysterious Sith Lord Darth Sidious.

Question: was he successful in this
Self-contained rewrite: Was Yoda succesful in pursuing the mysterious Sith Lord Darth Sidious?