"I have read many articles on strategy and listened to many "old-hands" talking about the Lepanto or the Hedgehog, Juggernauts, Steamrollers and such like. However, when it comes down to brass tacks, the only really effective way to win is to have at least one good alliance. In a seriously competitive game it is the opponent who knows the one RIGHT way to persuade players to ally with him who will win through every time. The answer? THREATEN YOUR OPPONENTS WITH PHYSICAL VIOLENCE."
January 1, 1970
https://en.wikiquote.org/wiki/Diplomacy_(game)