Okay, lets say Hyman was behind the assasination attempt on Michael (which is the popular theory). Michael goes and acts all buddy buddy with Roth, and says that Pentangalie was behind it, and that he would be killed.

Now, another popular theory is that Hyman Roth had the Rosatos go after Pentangalie. Why? If Michael said that he would kill Pentangalie, why would Roth go and kill him? This, as of now, is the one thing I don't understand out of all three films.

No, I didn't search for them...I'm just not in the mood. But, I guess, if you guys wanna be mean I will try and gain the extra effort to search for it...