I am a huge Godfather fan. I love not only the movies, but the books as well. Just had some questions about the Godfather movies...

1. Why does Michael tell Tom "you're out" during the meeting?

2. In Part II, when Michael visits Pentangelli, why does he first accuse him and then say he wants his help to take revenge?

3. Can someone clarify the role of the Rosaro brothers? Why do they try to kill Pentangelli?

I am new to all of this so I would appreciate any help