Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

I really want to watch this movie The Wolverine, and was wondering if I have to watch something before watching this movie so that I won't miss or not get part of the movie?  Which of the previous X-Men films are required viewing before watching The Wolverine?
Can The Wolverine be viewed as a stand-alone film?

I'm talking about the Malayalam/Tamil movie Solo  After finishing it IMDb Trivia shows that there is two climax scene. The 4th story has two different ending, one is shown in Tamil region and another is shown in Kerala region. One is director's cut and another one is forcefully edited by the producer. The director "Bejoy Nambiar" tweeted about it:    For all those asking about the changed ending. It has been done without my knowledge and consent.Good or Bad I stand by the film I made...   The version that I watched has a ending like     Rudra went to the marriage ceremony and said sorry to both bride and groom.   What's the other climax? Can anyone please tell me? I Googled but can't find any document that shows the changes between the two version.
What are the differences between two climax of Solo?

Near the end of The Raid (2011), the lieutenant Wahyu and Dagu reach the boss, then Wahyu kills Dagu. But he is not on the boss' side (and later kills the boss anyway) so why kill his comrade?

Why does Wahyu kill Dagu?

