[These cases have been closed. If you would like to appeal the decision of the hunter please open a ticket on the help page and the case will be looked into by a second hunter.]
You accused these guys of suspicious play after only one round of attacks and I didn't see it. I don't really see the game play that is "consistent with secret diplomacy." As far as the comment in game chat I think he was playing on your thoughts that just because they play some games together that it is suspicious.
I'm sorry, perhaps it isn't clear from the game report. But in a 3 player game one knows when the other two are deliberately avoiding attacking each other. In this game blue allowed green to hold America in consecutive rounds while he had the ability to to break him. Green did the same. Two buddies playing together making sure one of them wins.
I did not accuse them of suspicious play after 1 round. I said it was suspicious that they had played so many so many games together. The play was suspicious later when they stopped breaking one another when they had the chance.