Tom was one of the most amazing characters in the Trilogy, and Robert Duvall played him perfectly. Always neatly attired, always even-tempered, answering insults with compliments, never ruffled. Yet ready to help carry out whatever nefarious scheme was necessary to help The Family.

I always thought that Tom got the short end of the, "Oh, if you were a wartime conigliere..." deal. He tried to stop Sonny, he sent the bodyguards after him, what more could he have done to prevent him from leaving?? He begged Sonny not to kill Tattaglia's son and he warned Vito that they should take Sollozzo's deal. He was a bit like Cassandra, no?