Which brings me to a point I want to make with moustachepete and others who believe that Roth engineered Frankie's survival in order to put Michael in the Senate perjury trap:
Roth lured Michael to Cuba for one purpose: to get the $2 million, and then have him assassinated. In Roth's plan, Michael would never leave Cuba alive. Why, then, would he engineer an impossibly difficult, impossibly risky, split-second entry by a cop to save Frankie in order to set him up as a witness against Michael Corleone--who Roth planned to kill in Cuba months before the Senate hearings were due to convene? [/QB][/QUOTE]

He would not have. Here is a possibility. Mike told Roth that "Frank Pentangeli is a dead man." Roth said Pentangeli was "small potatoes," and thanked Mike for getting the go ahead from him. Since Roth planned to kill Mike in Cuba, he could have given the Rosato brothers the ok to kill Pentangeli (or engineer what I agree to be a very difficult intervention by a cop, leaving Frankie alive) in an effort to further weaken and disrupt the Corleone family. With Michael and Pentangeli out oof the way, Roth would have been able to take over all the Corleone operations in Nevada AND in New York without a war.