[GrudgeBringer]

Any amount of turns is OK, some like 3 and others like 5. I have even seen a 10 turn no attack rule for the first 10 turns (I think David and Golith was like that) because it was a noob game and they wanted everyone to expand freely, to give them a chance to get their feet on the ground.

I played in that game and I like that rule for new guys.

But I would let nations set there own time frame.