Earlier quoted context omitted.
In Risk, you're just fighting over limited resources. You largely wage these battles on your own. There is no real negotiation between players, other than an implicit, passing agreement when you don't provoke someone by attacking them. Diplomacy, however, you can't manage any attacks by yourself. You will either depend on someone helping you with an attack/defense, or you will have to trust that someone doesn't attac…
>There is no real negotiation between players, other than an implicit, passing agreement when you don't provoke someone by attacking them. It depends how you play. I've seen people make treaties for all sorts of things for various durations, e.g. don't attack from Country X into Country Y and I won't attack across that border either.
In Diplomacy, it's a matter of choosing which of your friends to backstab. In a three way dynamic, it's basically two friends deciding that if the three of you crash in the mountains, they are eating you first.