It occurred to me....Fredo “identifying” and siding with Greene because Greene said he did the Corleones a favour and took Fredo in when the Corleones were having a bad time
After all that Greene had done for the family and Fredo, Michael is now pushing Fredo's good friend Greene out
No wonder Fredo was so upset
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Mike! You don't come to Las Vegas and talk to a man like Moe Greene like that!
